Techniques for switching between configured grant modes

ABSTRACT

Methods, systems, and devices for wireless communication at a user equipment (UE) are described. A UE may receive control signaling configuring at least a first UE operation mode and a second UE operation mode. The UE may transmit one or more uplink messages to a base station in the unlicensed radio frequency spectrum band using a first set of parameters according to the first UE operation mode. In some examples, the UE may receive a control message comprising an indication that the UE is to switch from communicating according to the first configured UE operation mode to communicating according to the second configured UE operation mode. The UE may then transmit, in response to the received indication, one or more uplink messages to the base station in the unlicensed radio frequency spectrum band using a second set of parameters according to the second UE operation mode.

CROSS REFERENCE

The present application is a 371 national stage filing of InternationalPCT Application No. PCT/CN2021/079248 by GUO et al. entitled “TECHNIQUESFOR SWITCHING BETWEEN CONFIGURED GRANT MODES,” filed Mar. 5, 2021, whichis assigned to the assignee hereof, and which is expressly incorporatedby reference in its entirety herein.

FIELD OF TECHNOLOGY

The following relates to wireless communication at a user equipment(UE), including techniques for switching between configured grant (CG)modes.

BACKGROUND

Wireless communications systems are widely deployed to provide varioustypes of communication content such as voice, video, packet data,messaging, broadcast, and so on. These systems may be capable ofsupporting communication with multiple users by sharing the availablesystem resources (e.g., time, frequency, and power). Examples of suchmultiple-access systems include fourth generation (4G) systems such asLong Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, orLTE-A Pro systems, and fifth generation (5G) systems which may bereferred to as New Radio (NR) systems. These systems may employtechnologies such as code division multiple access (CDMA), time divisionmultiple access (TDMA), frequency division multiple access (FDMA),orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonalfrequency division multiplexing (DFT-S-OFDM).

A wireless multiple-access communications system may include one or morebase stations or one or more network access nodes, each simultaneouslysupporting communication for multiple communication devices, which maybe otherwise known as user equipment (UE). Some wireless communicationssystems may support downlink and uplink communications from and tomultiple base stations. Some wireless communications systems may alsosupport communications over some physical channels, such as physicaldownlink shared channel (PDSCH) and physical uplink shared channel(PUSCH). As demand for communication efficiency increases, it may bedesirable to provide improvements to communications from and to one ormore base stations, among other examples.

SUMMARY

The described techniques relate to improved methods, systems, devices,and apparatuses that support techniques for switching between configuredgrant (CG) modes. Generally, the described techniques provide forconfiguring a communication device, which may be otherwise known as userequipment (UE) to support dynamic switching of CG modes whencommunicating from and to one or more base station. In some examples, awireless communications system operating in unlicensed spectrum maysupport different CG modes, for example, ultra-reliable low-latencycommunications (URLLC) or an unlicensed new radio (NR-U) communications.In examples, communication according a URLLC CG mode may operateaccording to lower latency parameters, higher-reliability parameters, orboth, than other communication modes, including other CG modes, forexample an NR-U CG mode.

A UE may support both URLLC CG mode and NR-U CG mode. One or moreaspects of the present disclosure provide for techniques for dynamicswitching between URLLC CG mode and NR-U CG mode. For examples, a UE maybe configured by a base station with one or more CG configurationsassociated with URLLC CG mode and NR-U CG mode. For example, the basestation may transmit control signaling configuring at least a first UEoperation mode (e.g., URLLC CG mode) and a second UE operation mode(e.g., NR-U CG mode). In some examples, the base station may use acontrol message to switch the UE between the two modes. For example,when the UE is configured with a URLLC CG mode, the base station maytransmit a control message indicating that the UE is to switch from theURLLC CG mode to the NR-U CG mode. Thus, the described techniques may,as a result, include features for improvements to uplink communicationsand, in some examples, may promote enhanced efficiency for highreliability and low latency uplink operations in 5G systems, among otherbenefits.

A method for wireless communication at a UE is described. The method mayinclude receiving, from a base station, control signaling configuring atleast a first UE operation mode and a second UE operation mode, thefirst UE operation mode indicating a first set of parameters for the UEto use for uplink communications in an unlicensed radio frequencyspectrum band, and the second UE operation mode indicating a second setof parameters for the UE to use for uplink communications in theunlicensed radio frequency spectrum band, transmitting one or moreuplink messages to the base station in the unlicensed radio frequencyspectrum band using the first set of parameters, receiving a controlmessage including an indication that the UE is to switch fromcommunicating according to the first configured UE operation mode tocommunicating according to the second configured UE operation mode, andtransmitting, in response to the received indication, one or more uplinkmessages to the base station in the unlicensed radio frequency spectrumband using the second set of parameters according to the second UEoperation mode.

An apparatus for wireless communication at a UE is described. Theapparatus may include a processor, memory coupled with the processor,and instructions stored in the memory. The instructions may beexecutable by the processor to cause the apparatus to receive, from abase station, control signaling configuring at least a first UEoperation mode and a second UE operation mode, the first UE operationmode indicating a first set of parameters for the UE to use for uplinkcommunications in an unlicensed radio frequency spectrum band, and thesecond UE operation mode indicating a second set of parameters for theUE to use for uplink communications in the unlicensed radio frequencyspectrum band, transmit one or more uplink messages to the base stationin the unlicensed radio frequency spectrum band using the first set ofparameters, receive a control message including an indication that theUE is to switch from communicating according to the first configured UEoperation mode to communicating according to the second configured UEoperation mode, and transmit, in response to the received indication,one or more uplink messages to the base station in the unlicensed radiofrequency spectrum band using the second set of parameters according tothe second UE operation mode.

Another apparatus for wireless communication at a UE is described. Theapparatus may include means for receiving, from a base station, controlsignaling configuring at least a first UE operation mode and a second UEoperation mode, the first UE operation mode indicating a first set ofparameters for the UE to use for uplink communications in an unlicensedradio frequency spectrum band, and the second UE operation modeindicating a second set of parameters for the UE to use for uplinkcommunications in the unlicensed radio frequency spectrum band, meansfor transmitting one or more uplink messages to the base station in theunlicensed radio frequency spectrum band using the first set ofparameters, means for receiving a control message including anindication that the UE is to switch from communicating according to thefirst configured UE operation mode to communicating according to thesecond configured UE operation mode, and means for transmitting, inresponse to the received indication, one or more uplink messages to thebase station in the unlicensed radio frequency spectrum band using thesecond set of parameters according to the second UE operation mode.

A non-transitory computer-readable medium storing code for wirelesscommunication at a UE is described. The code may include instructionsexecutable by a processor to receive, from a base station, controlsignaling configuring at least a first UE operation mode and a second UEoperation mode, the first UE operation mode indicating a first set ofparameters for the UE to use for uplink communications in an unlicensedradio frequency spectrum band, and the second UE operation modeindicating a second set of parameters for the UE to use for uplinkcommunications in the unlicensed radio frequency spectrum band, transmitone or more uplink messages to the base station in the unlicensed radiofrequency spectrum band using the first set of parameters, receive acontrol message including an indication that the UE is to switch fromcommunicating according to the first configured UE operation mode tocommunicating according to the second configured UE operation mode, andtransmit, in response to the received indication, one or more uplinkmessages to the base station in the unlicensed radio frequency spectrumband using the second set of parameters according to the second UEoperation mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, receiving the controlsignaling may include operations, features, means, or instructions forreceiving a configuration indicating resources granted to the UE forcommunication in the unlicensed radio frequency spectrum band, theconfiguration associated with at least the first UE operation mode andthe second UE operation mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, receiving the controlsignaling may include operations, features, means, or instructions forreceiving a first configuration indicating resources granted to the UEfor communication in the unlicensed radio frequency spectrum bandaccording to the first set of parameters, the first configuration ofresources being associated with the first UE operation mode andreceiving a second configuration indicating resources granted to the UEfor communication in the unlicensed radio frequency spectrum bandaccording to the second set of parameters, the second configuration ofresources being associated with the second UE operation mode.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for transmitting a requestto update to a UE operation mode from the first configured UE operationmode to the second configured UE operation mode, where receiving thecontrol message may be at least in part in response to transmitting therequest.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the request includes at leasta bit indicating a request to switch a UE operation mode, a bit fieldindicating an identity of a serving cell associated with the request,and a bit field indicating an identity of a bandwidth part associatedwith the request.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the request includes at leasta bitmap indicating a request to switch a UE operation mode for eachconfiguration of resources, a bit field indicating an identity of aserving cell associated with the request, and a bit field indicating anidentity of a bandwidth part associated with the request.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for transmitting, to thebase station, a feedback message in response to receiving the controlmessage, the feedback message indicating that the UE may be to switchfrom communicating according to the first configured UE operation modeto communicating according to the second configured UE operation mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the feedback message may betransmitted during a first time slot and the uplink messages using thesecond set of parameters according to the second UE operation mode maybe transmitted during a second time slot, and the second time slot maybe at least a threshold number of time slots after the first time slot.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for determining aninterference condition associated with uplink communications in theunlicensed radio frequency spectrum band and transmitting, based on theinterference condition satisfying a threshold, a second control messagerequesting an update to a UE operation mode from the first configured UEoperation mode to the second configured UE operation mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, at least one of the first UEoperation mode and the second UE operation mode may be associated with areconfiguration timer.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for receiving, from thebase station, an indication of a default UE operation mode that includesone of the first UE operation mode or the second UE operation mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the indication of the controlmessage includes at least a bit indicating for the UE to switch a UEoperation mode, a bit field indicating an identity of a serving cellassociated with the UE operation mode switch, and a bit field indicatingan identity of a bandwidth part associated with the UE operation modeswitch.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the indication of the controlmessage includes at least a bitmap indicating an operation mode switchfor each configuration of resources, a bit field indicating an identityof a serving cell associated with the UE operation mode switch, and abit field indicating an identity of a bandwidth part associated with theUE operation mode switch.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the first UE operation modeincludes an URLLC operation mode, and the second UE operation modeincludes an NR-U operation mode.

A method for wireless communication at a base station is described. Themethod may include transmitting, to a UE, control signaling configuringat least a first UE operation mode and a second UE operation mode, thefirst UE operation mode indicating a first set of parameters for the UEto use for uplink communications in an unlicensed radio frequencyspectrum band, and the second UE operation mode indicating a second setof parameters for the UE to use for uplink communications in theunlicensed radio frequency spectrum band, receiving one or more uplinkmessages from the UE in the unlicensed radio frequency spectrum bandusing the first set of parameters, transmitting a control messageincluding an indication that the UE is to switch from communicatingaccording to the first configured UE operation mode to communicatingaccording to the second configured UE operation mode, and receiving, inresponse to the transmitted indication, one or more uplink messages fromthe UE in the unlicensed radio frequency spectrum band using the secondset of parameters according to the second UE operation mode.

An apparatus for wireless communication at a base station is described.The apparatus may include a processor, memory coupled with theprocessor, and instructions stored in the memory. The instructions maybe executable by the processor to cause the apparatus to transmit, to aUE, control signaling configuring at least a first UE operation mode anda second UE operation mode, the first UE operation mode indicating afirst set of parameters for the UE to use for uplink communications inan unlicensed radio frequency spectrum band, and the second UE operationmode indicating a second set of parameters for the UE to use for uplinkcommunications in the unlicensed radio frequency spectrum band, receiveone or more uplink messages from the UE in the unlicensed radiofrequency spectrum band using the first set of parameters, transmit acontrol message including an indication that the UE is to switch fromcommunicating according to the first configured UE operation mode tocommunicating according to the second configured UE operation mode, andreceive, in response to the transmitted indication, one or more uplinkmessages from the UE in the unlicensed radio frequency spectrum bandusing the second set of parameters according to the second UE operationmode.

Another apparatus for wireless communication at a base station isdescribed. The apparatus may include means for transmitting, to a UE,control signaling configuring at least a first UE operation mode and asecond UE operation mode, the first UE operation mode indicating a firstset of parameters for the UE to use for uplink communications in anunlicensed radio frequency spectrum band, and the second UE operationmode indicating a second set of parameters for the UE to use for uplinkcommunications in the unlicensed radio frequency spectrum band, meansfor receiving one or more uplink messages from the UE in the unlicensedradio frequency spectrum band using the first set of parameters, meansfor transmitting a control message including an indication that the UEis to switch from communicating according to the first configured UEoperation mode to communicating according to the second configured UEoperation mode, and means for receiving, in response to the transmittedindication, one or more uplink messages from the UE in the unlicensedradio frequency spectrum band using the second set of parametersaccording to the second UE operation mode.

A non-transitory computer-readable medium storing code for wirelesscommunication at a base station is described. The code may includeinstructions executable by a processor to transmit, to a UE, controlsignaling configuring at least a first UE operation mode and a second UEoperation mode, the first UE operation mode indicating a first set ofparameters for the UE to use for uplink communications in an unlicensedradio frequency spectrum band, and the second UE operation modeindicating a second set of parameters for the UE to use for uplinkcommunications in the unlicensed radio frequency spectrum band, receiveone or more uplink messages from the UE in the unlicensed radiofrequency spectrum band using the first set of parameters, transmit acontrol message including an indication that the UE is to switch fromcommunicating according to the first configured UE operation mode tocommunicating according to the second configured UE operation mode, andreceive, in response to the transmitted indication, one or more uplinkmessages from the UE in the unlicensed radio frequency spectrum bandusing the second set of parameters according to the second UE operationmode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, transmitting the controlsignaling may include operations, features, means, or instructions for aconfiguration indicating resources granted to the UE for communicationin the unlicensed radio frequency spectrum band, the configurationassociated with at least the first UE operation mode and the second UEoperation mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, transmitting the controlsignaling may include operations, features, means, or instructions fortransmitting a first configuration indicating resources granted to theUE for communication in the unlicensed radio frequency spectrum bandaccording to the first set of parameters, the first configuration ofresources being associated with the first UE operation mode andtransmitting a second configuration indicating resources granted to theUE for communication in the unlicensed radio frequency spectrum bandaccording to the second set of parameters, the second configuration ofresources being associated with the second UE operation mode.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for receiving a request toupdate to a UE operation mode from the first configured UE operationmode to the second configured UE operation mode, where receiving thecontrol message may be at least in part in response to transmitting therequest.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the request includes at leasta bit indicating a request to switch a UE operation mode, a bitmapindicating a request to switch a UE operation mode for eachconfiguration of resources, a bit field indicating an identity of aserving cell associated with the request, and a bit field indicating anidentity of a bandwidth part associated with the request.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for receiving, from the UE,a feedback message in response to transmitting the control message, thefeedback message indicating that the UE may be to switch fromcommunicating according to the first configured UE operation mode tocommunicating according to the second configured UE operation mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, at least one of the first UEoperation mode and the second UE operation mode may be associated with areconfiguration timer.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for transmitting, to theUE, an indication of a default UE operation mode that includes one ofthe first UE operation mode or the second UE operation mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the indication of controlmessage includes at least a bit indicating for the UE to switch a UEoperation mode, a bitmap indicating an operation mode switch for eachconfiguration of resources, a bit field indicating an identity of aserving cell associated with the UE operation mode switch, and a bitfield indicating an identity of a bandwidth part associated with the UEoperation mode switch.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an example of a wireless communications system thatsupports techniques for switching between configured grant (CG) modes inaccordance with aspects of the present disclosure.

FIG. 2 illustrates an example of a wireless communications system thatsupports techniques for switching between CG modes in accordance withaspects of the present disclosure.

FIG. 3 illustrates an example of a process flow that supports techniquesfor switching between CG modes in accordance with aspects of the presentdisclosure.

FIG. 4 illustrates an example of a process flow that supports techniquesfor switching between CG modes in accordance with aspects of the presentdisclosure.

FIG. 5 illustrates an example of a process flow that supports techniquesfor switching between CG modes in accordance with aspects of the presentdisclosure.

FIG. 6 illustrates an example of a process flow that supports techniquesfor switching between CG modes in accordance with aspects of the presentdisclosure.

FIGS. 7A-7D illustrate examples of control elements that supporttechniques for switching between CG modes in accordance with aspects ofthe present disclosure.

FIGS. 8 and 9 show block diagrams of devices that support techniques forswitching between CG modes in accordance with aspects of the presentdisclosure.

FIG. 10 shows a block diagram of a communications manager that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure.

FIG. 11 shows a diagram of a system including a device that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure.

FIGS. 12 and 13 show block diagrams of devices that support techniquesfor switching between CG modes in accordance with aspects of the presentdisclosure.

FIG. 14 shows a block diagram of a communications manager that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure.

FIG. 15 shows a diagram of a system including a device that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure.

FIGS. 16 through 23 show flowcharts illustrating methods that supporttechniques for switching between CG modes in accordance with aspects ofthe present disclosure.

DETAILED DESCRIPTION

Wireless communications systems may include multiple communicationdevices such as user equipment (UEs) and base stations, which mayprovide wireless communication services to the UEs. For example, suchbase stations may be next-generation NodeBs or giga-NodeBs (either ofwhich may be referred to as a gNB) that may support multiple radioaccess technologies including fourth generation (4G) systems, such asLong Term Evolution (LTE) systems, as well as fifth generation (5G)systems, which may be referred to as New Radio (NR) systems. Thedescribed techniques may be used to configure the UEs to supportcommunications to and from multiple transmission and reception points(TRPs). In some wireless communications systems, a UE may communicatewith a base station over a channel according to a configured grant (CG)from the base station. The UE having uplink messages to transmit using aCG may activate resources of a physical uplink shared channel (PUSCH)that are configured by the CG from the base station, on which uplinktransmissions may be sent. In some examples, a wireless communicationssystem operating in unlicensed spectrum may support a CG communicationaccording to low-latency parameters, high-reliability parameters, orboth—for example, ultra-reliable low-latency communications (URLLC). Inother examples, the wireless communication system may support a CGcommunication in an unlicensed new radio (NR-U) system. In some cases oroperating environments, a UE using a URLLC CG mode may experience lowerlatency and higher reliability than a UE using an NR-U CG mode. In somecases, a UE using an NR-U CG mode may experience a threshold number oflisten before talk (LBT) failures in an unlicensed band.

In some examples, the UE may support semi-static switching between usinga URLLC CG mode and an NR-U CG mode. However, semi-static switching mayinclude switching latency. Additionally or alternatively, a base stationmay be unaware of a change in interference condition at the UE foruplink transmission. One or more aspects of the present disclosureprovide for techniques for dynamic switching between URLLC CG mode andNR-U CG mode.

A UE and a base station may support dynamic switching between URLLC CGmode and NR-U CG mode to account for a change in interference level atthe UE. The UE may be configured by the base station with one or more CGconfigurations associated with two modes. For example, the base stationmay transmit control signaling configuring at least a first UE operationmode (e.g., URLLC CG mode) and a second UE operation mode (e.g., NR-U CGmode). Although URLLC CG mode and NR-U CG mode are specificallydiscussed herein, additional or alternative UE operation modes (e.g.,other CG modes) may be used consistent with the techniques and examplesdescribed herein. In some examples, the first UE operation mode mayindicate a first set of parameters for the UE to use for uplinkcommunications in an unlicensed radio frequency spectrum band, and thesecond UE operation mode may indicate a second set of parameters for theUE to use for uplink communications in the unlicensed radio frequencyspectrum band. In some examples, different UE operation modes (e.g.,different CG modes) may be characterized by having different sets ofparameters for the ULE to use for uplink communications (e.g., for CGcommunications in an unlicensed radio frequency spectrum band). The basestation may then use a control message to switch the UE between the twomodes. For example, the UE may have a CG configured with a URLLC modeand a NR-U mode. In some cases, the base station may transmit a controlmessage indicating that the UE is to switch from the URLLC CG mode tothe NR-U CG mode. Additionally or alternatively, the UE may transmit acontrol message to the base station to request to switch between modes,where the base station may respond by transmitting a control message toindicate an updated CG mode. According to one or more aspects, the UEmay support CG configurations where each CG configuration is configuredwith two modes. Additionally or alternatively, the UE may be configuredwith two separate CG processes. For example, the UE may have a first CGprocess corresponding to a URLLC CG, as well as a second processcorresponding to an NR-U CG. In some examples, the base station mayactivate a CG process using a control message.

Particular aspects of the subject matter described in this disclosuremay be implemented to realize one or more of the following potentialimprovements, among others. The techniques employed by the UE mayprovide benefits and enhancements to the operation of the UE. Forexample, operations performed by the UE may provide improvements tocommunications when operating in 5G/NR systems. In some examples,configuring the UE to support dynamic switching between CG modes, amongother examples in 5G/NR systems, may support improvements in powerconsumption, resource usage, coverage enhancements, spectral efficiency,higher data rates, among other benefits.

Aspects of the disclosure are initially described in the context ofwireless communications systems. Aspects of the disclosure are furtherillustrated by and described with reference to process flows and controlelements. Aspects of the disclosure are further illustrated by anddescribed with reference to apparatus diagrams, system diagrams, andflowcharts that relate to techniques for switching between CG modes.

FIG. 1 illustrates an example of a wireless communications system 100that supports techniques for switching between CG modes in accordancewith aspects of the present disclosure. The wireless communicationssystem 100 may include one or more base stations 105, one or more UEs115, and a core network 130. In some examples, the wirelesscommunications system 100 may be a Long Term Evolution (LTE) network, anLTE-Advanced (LTE-A) network, an LTE-A Pro network, or an NR network. Insome examples, the wireless communications system 100 may supportenhanced broadband communications, ultra-reliable (e.g., missioncritical) communications, low latency communications, communicationswith low-cost and low-complexity devices, or any combination thereof.

The base stations 105 may be dispersed throughout a geographic area toform the wireless communications system 100 and may be devices indifferent forms or having different capabilities. The base stations 105and the UEs 115 may wirelessly communicate via one or more communicationlinks 125. Each base station 105 may provide a coverage area 110 overwhich the UEs 115 and the base station 105 may establish one or morecommunication links 125. The coverage area 110 may be an example of ageographic area over which a base station 105 and a UE 115 may supportthe communication of signals according to one or more radio accesstechnologies.

The UEs 115 may be dispersed throughout a coverage area 110 of thewireless communications system 100, and each UE 115 may be stationary,or mobile, or both at different times. The UEs 115 may be devices indifferent forms or having different capabilities. Some example UEs 115are illustrated in FIG. 1 . The UEs 115 described herein may be able tocommunicate with various types of devices, such as other UEs 115, thebase stations 105, or network equipment (e.g., core network nodes, relaydevices, integrated access and backhaul (IAB) nodes, or other networkequipment), as shown in FIG. 1 .

The base stations 105 may communicate with the core network 130, or withone another, or both. For example, the base stations 105 may interfacewith the core network 130 through one or more backhaul links 120 (e.g.,via an S1, N2, N3, or other interface). The base stations 105 maycommunicate with one another over the backhaul links 120 (e.g., via anX2, Xn, or other interface) either directly (e.g., directly between basestations 105), or indirectly (e.g., via core network 130), or both. Insome examples, the backhaul links 120 may be or include one or morewireless links.

One or more of the base stations 105 described herein may include or maybe referred to by a person having ordinary skill in the art as a basetransceiver station, a radio base station, an access point, a radiotransceiver, a NodeB, an eNodeB (eNB), a next-generation NodeB or agiga-NodeB (either of which may be referred to as a gNB), a Home NodeB,a Home eNodeB, or other suitable terminology.

A UE 115 may include or may be referred to as a mobile device, awireless device, a remote device, a handheld device, or a subscriberdevice, or some other suitable terminology, where the “device” may alsobe referred to as a unit, a station, a terminal, or a client, amongother examples. A UE 115 may also include or may be referred to as apersonal electronic device such as a cellular phone, a personal digitalassistant (PDA), a tablet computer, a laptop computer, or a personalcomputer. In some examples, a UE 115 may include or be referred to as awireless local loop (WLL) station, an Internet of Things (IoT) device,an Internet of Everything (IoE) device, or a machine type communications(MTC) device, among other examples, which may be implemented in variousobjects such as appliances, or vehicles, meters, among other examples.

The UEs 115 described herein may be able to communicate with varioustypes of devices, such as other UEs 115 that may sometimes act as relaysas well as the base stations 105 and the network equipment includingmacro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations,among other examples, as shown in FIG. 1 .

The UEs 115 and the base stations 105 may wirelessly communicate withone another via one or more communication links 125 over one or morecarriers. The term “carrier” may refer to a set of radio frequencyspectrum resources having a defined physical layer structure forsupporting the communication links 125. For example, a carrier used fora communication link 125 may include a portion of a radio frequencyspectrum band (e.g., a bandwidth part (BWP)) that is operated accordingto one or more physical layer channels for a given radio accesstechnology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layerchannel may carry acquisition signaling (e.g., synchronization signals,system information), control signaling that coordinates operation forthe carrier, user data, or other signaling. The wireless communicationssystem 100 may support communication with a UE 115 using carrieraggregation or multi-carrier operation. A UE 115 may be configured withmultiple downlink component carriers and one or more uplink componentcarriers according to a carrier aggregation configuration. Carrieraggregation may be used with both frequency division duplexing (FDD) andtime division duplexing (TDD) component carriers.

In some examples (e.g., in a carrier aggregation configuration), acarrier may also have acquisition signaling or control signaling thatcoordinates operations for other carriers. A carrier may be associatedwith a frequency channel (e.g., an evolved universal mobiletelecommunication system terrestrial radio access (E-UTRA) absoluteradio frequency channel number (EARFCN)) and may be positioned accordingto a channel raster for discovery by the UEs 115. A carrier may beoperated in a standalone mode where initial acquisition and connectionmay be conducted by the UEs 115 via the carrier, or the carrier may beoperated in a non-standalone mode where a connection is anchored using adifferent carrier (e.g., of the same or a different radio accesstechnology).

The communication links 125 shown in the wireless communications system100 may include uplink transmissions from a UE 115 to a base station105, or downlink transmissions from a base station 105 to a UE 115.Carriers may carry downlink or uplink communications (e.g., in an FDDmode) or may be configured to carry downlink and uplink communications(e.g., in a TDD mode).

A carrier may be associated with a particular bandwidth of the radiofrequency spectrum, and in some examples the carrier bandwidth may bereferred to as a “system bandwidth” of the carrier or the wirelesscommunications system 100. For example, the carrier bandwidth may be oneof a number of determined bandwidths for carriers of a particular radioaccess technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz(MHz)). Devices of the wireless communications system 100 (e.g., thebase stations 105, the UEs 115, or both) may have hardwareconfigurations that support communications over a particular carrierbandwidth or may be configurable to support communications over one of aset of carrier bandwidths. In some examples, the wireless communicationssystem 100 may include base stations 105 or UEs 115 that supportsimultaneous communications via carriers associated with multiplecarrier bandwidths. In some examples, each served UE 115 may beconfigured for operating over portions (e.g., a sub-band, a BWP) or allof a carrier bandwidth.

Signal waveforms transmitted over a carrier may be made up of multiplesubcarriers (e.g., using multi-carrier modulation (MCM) techniques suchas orthogonal frequency division multiplexing (OFDM) or discrete Fouriertransform spread OFDM (DFT-S-OFDM)). In a system employing MCMtechniques, a resource element may include one symbol period (e.g., aduration of one modulation symbol) and one subcarrier, where the symbolperiod and subcarrier spacing are inversely related. The number of bitscarried by each resource element may depend on the modulation scheme(e.g., the order of the modulation scheme, the coding rate of themodulation scheme, or both). Thus, the more resource elements that a UE115 receives and the higher the order of the modulation scheme, thehigher the data rate may be for the UE 115. A wireless communicationsresource may refer to a combination of a radio frequency spectrumresource, a time resource, and a spatial resource (e.g., spatial layersor beams), and the use of multiple spatial layers may further increasethe data rate or data integrity for communications with a UE 115.

One or more numerologies for a carrier may be supported, where anumerology may include a subcarrier spacing (Δf) and a cyclic prefix. Acarrier may be divided into one or more BWPs having the same ordifferent numerologies. In some examples, a UE 115 may be configuredwith multiple BWPs. In some examples, a single BWP for a carrier may beactive at a given time and communications for the UE 115 may berestricted to one or more active BWPs.

The time intervals for the base stations 105 or the UEs 115 may beexpressed in multiples of a basic time unit which may, for example,refer to a sampling period of T_(S)=1/(Δf_(max)·N_(f)) seconds, whereΔf_(max) may represent the maximum supported subcarrier spacing, andN_(f) may represent the maximum supported discrete Fourier transform(DFT) size. Time intervals of a communications resource may be organizedaccording to radio frames each having a specified duration (e.g., 10milliseconds (ms)). Each radio frame may be identified by a system framenumber (SFN) (e.g., ranging from 0 to 1023).

Each frame may include multiple consecutively numbered subframes orslots, and each subframe or slot may have the same duration. In someexamples, a frame may be divided (e.g., in the time domain) intosubframes, and each subframe may be further divided into a number ofslots. Alternatively, each frame may include a variable number of slots,and the number of slots may depend on subcarrier spacing. Each slot mayinclude a number of symbol periods (e.g., depending on the length of thecyclic prefix prepended to each symbol period). In some wirelesscommunications systems 100, a slot may further be divided into multiplemini-slots containing one or more symbols. Excluding the cyclic prefix,each symbol period may contain one or more (e.g., N_(f)) samplingperiods. The duration of a symbol period may depend on the subcarrierspacing or frequency band of operation.

A subframe, a slot, a mini-slot, or a symbol may be the smallestscheduling unit (e.g., in the time domain) of the wirelesscommunications system 100 and may be referred to as a transmission timeinterval (TTI). In some examples, the TTI duration (e.g., the number ofsymbol periods in a TTI) may be variable. Additionally or alternatively,the smallest scheduling unit of the wireless communications system 100may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

Physical channels may be multiplexed on a carrier according to varioustechniques. A physical control channel and a physical data channel maybe multiplexed on a downlink carrier, for example, using one or more oftime division multiplexing (TDM) techniques, frequency divisionmultiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A controlregion (e.g., a control resource set (CORESET)) for a physical controlchannel may be defined by a number of symbol periods and may extendacross the system bandwidth or a subset of the system bandwidth of thecarrier. One or more control regions (e.g., CORESETs) may be configuredfor a set of the UEs 115. For example, one or more of the UEs 115 maymonitor or search control regions for control information according toone or more search space sets, and each search space set may include oneor multiple control channel candidates in one or more aggregation levelsarranged in a cascaded manner. An aggregation level for a controlchannel candidate may refer to a number of control channel resources(e.g., control channel elements (CCEs)) associated with encodedinformation for a control information format having a given payloadsize. Search space sets may include common search space sets configuredfor sending control information to multiple UEs 115 and UE-specificsearch space sets for sending control information to a specific UE 115.

Each base station 105 may provide communication coverage via one or morecells, for example a macro cell, a small cell, a hot spot, or othertypes of cells, or any combination thereof. The term “cell” may refer toa logical communication entity used for communication with a basestation 105 (e.g., over a carrier) and may be associated with anidentifier for distinguishing neighboring cells (e.g., a physical cellidentifier (PCID), a virtual cell identifier (VCID), or others). In someexamples, a cell may also refer to a geographic coverage area 110 or aportion of a geographic coverage area 110 (e.g., a sector) over whichthe logical communication entity operates. Such cells may range fromsmaller areas (e.g., a structure, a subset of structure) to larger areasdepending on various factors such as the capabilities of the basestation 105. For example, a cell may be or include a building, a subsetof a building, or exterior spaces between or overlapping with geographiccoverage areas 110, among other examples.

A macro cell generally covers a relatively large geographic area (e.g.,several kilometers in radius) and may allow unrestricted access by theUEs 115 with service subscriptions with the network provider supportingthe macro cell. A small cell may be associated with a lower-powered basestation 105, as compared with a macro cell, and a small cell may operatein the same or different (e.g., licensed, unlicensed) frequency bands asmacro cells. Small cells may provide unrestricted access to the UEs 115with service subscriptions with the network provider or may providerestricted access to the UEs 115 having an association with the smallcell (e.g., the UEs 115 in a closed subscriber group (CSG), the UEs 115associated with users in a home or office). A base station 105 maysupport one or multiple cells and may also support communications overthe one or more cells using one or multiple component carriers.

In some examples, a carrier may support multiple cells, and differentcells may be configured according to different protocol types (e.g.,MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that mayprovide access for different types of devices.

In some examples, a base station 105 may be movable and thereforeprovide communication coverage for a moving geographic coverage area110. In some examples, different geographic coverage areas 110associated with different technologies may overlap, but the differentgeographic coverage areas 110 may be supported by the same base station105. In other examples, the overlapping geographic coverage areas 110associated with different technologies may be supported by differentbase stations 105. The wireless communications system 100 may include,for example, a heterogeneous network in which different types of thebase stations 105 provide coverage for various geographic coverage areas110 using the same or different radio access technologies.

The wireless communications system 100 may support synchronous orasynchronous operation. For synchronous operation, the base stations 105may have similar frame timings, and transmissions from different basestations 105 may be approximately aligned in time. For asynchronousoperation, the base stations 105 may have different frame timings, andtransmissions from different base stations 105 may, in some examples,not be aligned in time. The techniques described herein may be used foreither synchronous or asynchronous operations.

Some UEs 115, such as MTC or IoT devices, may be low cost or lowcomplexity devices and may provide for automated communication betweenmachines (e.g., via Machine-to-Machine (M2M) communication). M2Mcommunication or MTC may refer to data communication technologies thatallow devices to communicate with one another or a base station 105without human intervention. In some examples, M2M communication or MTCmay include communications from devices that integrate sensors or metersto measure or capture information and relay such information to acentral server or application program that makes use of the informationor presents the information to humans interacting with the applicationprogram. Some UEs 115 may be designed to collect information or enableautomated behavior of machines or other devices. Examples ofapplications for MTC devices include smart metering, inventorymonitoring, water level monitoring, equipment monitoring, healthcaremonitoring, wildlife monitoring, weather and geological eventmonitoring, fleet management and tracking, remote security sensing,physical access control, and transaction-based business charging.

Some UEs 115 may be configured to employ operating modes that reducepower consumption, such as half-duplex communications (e.g., a mode thatsupports one-way communication via transmission or reception, but nottransmission and reception simultaneously). In some examples,half-duplex communications may be performed at a reduced peak rate.Other power conservation techniques for the UEs 115 include entering apower saving deep sleep mode when not engaging in active communications,operating over a limited bandwidth (e.g., according to narrowbandcommunications), or a combination of these techniques. For example, someUEs 115 may be configured for operation using a narrowband protocol typethat is associated with a defined portion or range (e.g., set ofsubcarriers or resource blocks (RBs)) within a carrier, within aguard-band of a carrier, or outside of a carrier.

The wireless communications system 100 may be configured to supportultra-reliable communications or low-latency communications, or variouscombinations thereof. For example, the wireless communications system100 may be configured to support URLLC or mission criticalcommunications. The UEs 115 may be designed to support ultra-reliable,low-latency, or critical functions (e.g., mission critical functions).Ultra-reliable communications may include private communication or groupcommunication and may be supported by one or more mission criticalservices such as mission critical push-to-talk (MCPTT), mission criticalvideo (MCVideo), or mission critical data (MCData). Support for missioncritical functions may include prioritization of services, and missioncritical services may be used for public safety or general commercialapplications. The terms ultra-reliable, low-latency, mission critical,and ultra-reliable low-latency may be used interchangeably herein.

In some examples, a UE 115 may also be able to communicate directly withother UEs 115 over a device-to-device (D2D) communication link 135(e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115utilizing D2D communications may be within the geographic coverage area110 of a base station 105. Other UEs 115 in such a group may be outsidethe geographic coverage area 110 of a base station 105 or be otherwiseunable to receive transmissions from a base station 105. In someexamples, groups of the UEs 115 communicating via D2D communications mayutilize a one-to-many (1:M) system in which each UE 115 transmits toevery other UE 115 in the group. In some examples, a base station 105facilitates the scheduling of resources for D2D communications. In othercases, D2D communications are carried out between the UEs 115 withoutthe involvement of a base station 105.

In some systems, the D2D communication link 135 may be an example of acommunication channel, such as a sidelink communication channel, betweenvehicles (e.g., UEs 115). In some examples, vehicles may communicateusing vehicle-to-everything (V2X) communications, vehicle-to-vehicle(V2V) communications, or some combination of these. A vehicle may signalinformation related to traffic conditions, signal scheduling, weather,safety, emergencies, or any other information relevant to a V2X system.In some examples, vehicles in a V2X system may communicate with roadsideinfrastructure, such as roadside units, or with the network via one ormore network nodes (e.g., base stations 105) using vehicle-to-network(V2N) communications, or with both.

The core network 130 may provide user authentication, accessauthorization, tracking, Internet Protocol (IP) connectivity, and otheraccess, routing, or mobility functions. The core network 130 may be anevolved packet core (EPC) or 5G core (5GC), which may include at leastone control plane entity that manages access and mobility (e.g., amobility management entity (MME), an access and mobility managementfunction (AMF)) and at least one user plane entity that routes packetsor interconnects to external networks (e.g., a serving gateway (S-GW), aPacket Data Network (PDN) gateway (P-GW), or a user plane function(UPF)). The control plane entity may manage non-access stratum (NAS)functions such as mobility, authentication, and bearer management forthe UEs 115 served by the base stations 105 associated with the corenetwork 130. User IP packets may be transferred through the user planeentity, which may provide IP address allocation as well as otherfunctions. The user plane entity may be connected to IP services 150 forone or more network operators. The IP services 150 may include access tothe Internet, Intranet(s), an IP Multimedia Subsystem (IMS), or aPacket-Switched Streaming Service.

Some of the network devices, such as a base station 105, may includesubcomponents such as an access network entity 140, which may be anexample of an access node controller (ANC). Each access network entity140 may communicate with the UEs 115 through one or more other accessnetwork transmission entities 145, which may be referred to as radioheads, smart radio heads, or transmission/reception points (TRPs). Eachaccess network transmission entity 145 may include one or more antennapanels. In some configurations, various functions of each access networkentity 140 or base station 105 may be distributed across various networkdevices (e.g., radio heads and ANCs) or consolidated into a singlenetwork device (e.g., a base station 105).

The wireless communications system 100 may operate using one or morefrequency bands, for example, in the range of 300 megahertz (MHz) to 300gigahertz (GHz). Generally, the region from 300 MHz to 3 GHz is known asthe ultra-high frequency (UHF) region or decimeter band because thewavelengths range from approximately one decimeter to one meter inlength. The UHF waves may be blocked or redirected by buildings andenvironmental features, but the waves may penetrate structuressufficiently for a macro cell to provide service to the UEs 115 locatedindoors. The transmission of UHF waves may be associated with smallerantennas and shorter ranges (e.g., less than 100 kilometers) compared totransmission using the smaller frequencies and longer waves of the highfrequency (HF) or very high frequency (VHF) portion of the spectrumbelow 300 MHz.

The wireless communications system 100 may also operate in a super highfrequency (SHF) region using frequency bands from 3 GHz to 30 GHz, alsoknown as the centimeter band, or in an extremely high frequency (EHF)region of the spectrum (e.g., from 30 GHz to 300 GHz), also known as themillimeter band. In some examples, the wireless communications system100 may support millimeter wave (mmW) communications between the UEs 115and the base stations 105, and EHF antennas of the respective devicesmay be smaller and more closely spaced than UHF antennas. In someexamples, this may facilitate use of antenna arrays within a device. Thepropagation of EHF transmissions, however, may be subject to evengreater atmospheric attenuation and shorter range than SHF or UHFtransmissions. The techniques disclosed herein may be employed acrosstransmissions that use one or more different frequency regions, anddesignated use of bands across these frequency regions may differ bycountry or regulating body.

The wireless communications system 100 may utilize both licensed andunlicensed radio frequency spectrum bands. For example, the wirelesscommunications system 100 may employ License Assisted Access (LAA),LTE-Unlicensed (LTE-U) radio access technology, or NR technology in anunlicensed band such as the 5 GHz industrial, scientific, and medical(ISM) band. When operating in unlicensed radio frequency spectrum bands,devices such as the base stations 105 and the UEs 115 may employ carriersensing for collision detection and avoidance. In some examples,operations in unlicensed bands may be based on a carrier aggregationconfiguration in conjunction with component carriers operating in alicensed band (e.g., LAA). Operations in unlicensed spectrum may includedownlink transmissions, uplink transmissions, P2P transmissions, or D2Dtransmissions, among other examples.

A base station 105 or a UE 115 may be equipped with multiple antennas,which may be used to employ techniques such as transmit diversity,receive diversity, multiple-input multiple-output (MIMO) communications,or beamforming. The antennas of a base station 105 or a UE 115 may belocated within one or more antenna arrays or antenna panels, which maysupport MIMO operations or transmit or receive beamforming. For example,one or more base station antennas or antenna arrays may be co-located atan antenna assembly, such as an antenna tower. In some examples,antennas or antenna arrays associated with a base station 105 may belocated in diverse geographic locations. A base station 105 may have anantenna array with a number of rows and columns of antenna ports thatthe base station 105 may use to support beamforming of communicationswith a UE 115. Likewise, a UE 115 may have one or more antenna arraysthat may support various MIMO or beamforming operations. Additionally oralternatively, an antenna panel may support radio frequency beamformingfor a signal transmitted via an antenna port.

The base stations 105 or the UEs 115 may use MIMO communications toexploit multipath signal propagation and increase the spectralefficiency by transmitting or receiving multiple signals via differentspatial layers. Such techniques may be referred to as spatialmultiplexing. The multiple signals may, for example, be transmitted bythe transmitting device via different antennas or different combinationsof antennas. Likewise, the multiple signals may be received by thereceiving device via different antennas or different combinations ofantennas. Each of the multiple signals may be referred to as a separatespatial stream and may carry bits associated with the same data stream(e.g., the same codeword) or different data streams (e.g., differentcodewords). Different spatial layers may be associated with differentantenna ports used for channel measurement and reporting. MIMOtechniques include single-user MIMO (SU-MIMO), where multiple spatiallayers are transmitted to the same receiving device, and multiple-userMIMO (MU-MIMO), where multiple spatial layers are transmitted tomultiple devices.

Beamforming, which may also be referred to as spatial filtering,directional transmission, or directional reception, is a signalprocessing technique that may be used at a transmitting device or areceiving device (e.g., a base station 105, a UE 115) to shape or steeran antenna beam (e.g., a transmit beam, a receive beam) along a spatialpath between the transmitting device and the receiving device.Beamforming may be achieved by combining the signals communicated viaantenna elements of an antenna array such that some signals propagatingat particular orientations with respect to an antenna array experienceconstructive interference while others experience destructiveinterference. The adjustment of signals communicated via the antennaelements may include a transmitting device or a receiving deviceapplying amplitude offsets, phase offsets, or both to signals carriedvia the antenna elements associated with the device. The adjustmentsassociated with each of the antenna elements may be defined by abeamforming weight set associated with a particular orientation (e.g.,with respect to the antenna array of the transmitting device orreceiving device, or with respect to some other orientation).

A base station 105 or a UE 115 may use beam sweeping techniques as partof beam forming operations. For example, a base station 105 may usemultiple antennas or antenna arrays (e.g., antenna panels) to conductbeamforming operations for directional communications with a UE 115.Some signals (e.g., synchronization signals, reference signals, beamselection signals, or other control signals) may be transmitted by abase station 105 multiple times in different directions. For example,the base station 105 may transmit a signal according to differentbeamforming weight sets associated with different directions oftransmission. Transmissions in different beam directions may be used toidentify (e.g., by a transmitting device, such as a base station 105, orby a receiving device, such as a UE 115) a beam direction for latertransmission or reception by the base station 105.

Some signals, such as data signals associated with a particularreceiving device, may be transmitted by a base station 105 in a singlebeam direction (e.g., a direction associated with the receiving device,such as a UE 115). In some examples, the beam direction associated withtransmissions along a single beam direction may be determined based on asignal that was transmitted in one or more beam directions. For example,a UE 115 may receive one or more of the signals transmitted by the basestation 105 in different directions and may report to the base station105 an indication of the signal that the UE 115 received with a highestsignal quality or an otherwise acceptable signal quality.

In some examples, transmissions by a device (e.g., by a base station 105or a UE 115) may be performed using multiple beam directions, and thedevice may use a combination of digital precoding or radio frequencybeamforming to generate a combined beam for transmission (e.g., from abase station 105 to a UE 115). The UE 115 may report feedback thatindicates precoding weights for one or more beam directions, and thefeedback may correspond to a configured number of beams across a systembandwidth or one or more sub-bands. The base station 105 may transmit areference signal (e.g., a cell-specific reference signal (CRS), achannel state information reference signal (CSI-RS)), which may beprecoded or unprecoded. The UE 115 may provide feedback for beamselection, which may be a precoding matrix indicator (PMI) orcodebook-based feedback (e.g., a multi-panel type codebook, a linearcombination type codebook, a port selection type codebook). Althoughthese techniques are described with reference to signals transmitted inone or more directions by a base station 105, a UE 115 may employsimilar techniques for transmitting signals multiple times in differentdirections (e.g., for identifying a beam direction for subsequenttransmission or reception by the UE 115) or for transmitting a signal ina single direction (e.g., for transmitting data to a receiving device).

A receiving device (e.g., a UE 115) may try multiple receiveconfigurations (e.g., directional listening) when receiving varioussignals from the base station 105, such as synchronization signals,reference signals, beam selection signals, or other control signals. Forexample, a receiving device may try multiple receive directions byreceiving via different antenna subarrays, by processing receivedsignals according to different antenna subarrays, by receiving accordingto different receive beamforming weight sets (e.g., differentdirectional listening weight sets) applied to signals received atmultiple antenna elements of an antenna array, or by processing receivedsignals according to different receive beamforming weight sets appliedto signals received at multiple antenna elements of an antenna array,any of which may be referred to as “listening” according to differentreceive configurations or receive directions. In some examples, areceiving device may use a single receive configuration to receive alonga single beam direction (e.g., when receiving a data signal). The singlereceive configuration may be aligned in a beam direction determinedbased on listening according to different receive configurationdirections (e.g., a beam direction determined to have a highest signalstrength, highest signal-to-noise ratio (SNR), or otherwise acceptablesignal quality based on listening according to multiple beamdirections).

The wireless communications system 100 may be a packet-based networkthat operates according to a layered protocol stack. In the user plane,communications at the bearer or Packet Data Convergence Protocol (PDCP)layer may be IP-based. A Radio Link Control (RLC) layer may performpacket segmentation and reassembly to communicate over logical channels.A Medium Access Control (MAC) layer may perform priority handling andmultiplexing of logical channels into transport channels. The MAC layermay also use error detection techniques, error correction techniques, orboth to support retransmissions at the MAC layer to improve linkefficiency. In the control plane, the Radio Resource Control (RRC)protocol layer may provide establishment, configuration, and maintenanceof an RRC connection between a ULE 115 and a base station 105 or a corenetwork 130 supporting radio bearers for user plane data. At thephysical layer, transport channels may be mapped to physical channels.

The UEs 115 and the base stations 105 may support retransmissions ofdata to increase the likelihood that data is received successfully.Hybrid automatic repeat request (HARQ) feedback is one technique forincreasing the likelihood that data is received correctly over acommunication link 125. HARQ may include a combination of errordetection (e.g., using a cyclic redundancy check (CRC)), forward errorcorrection (FEC), and retransmission (e.g., automatic repeat request(ARQ)). HARQ may improve throughput at the MAC layer in poor radioconditions (e.g., low signal-to-noise conditions). In some examples, adevice may support same-slot HARQ feedback, where the device may provideHARQ feedback in a specific slot for data received in a previous symbolin the slot. In other cases, the device may provide HARQ feedback in asubsequent slot, or according to some other time interval.

According to one or more aspects of the present disclosure, a UE 115 mayreceive control signaling from a base station 105. The control signalingmay configure at least a first UE operation mode and a second UEoperation mode. In some examples, the first UE operation mode mayindicate a first set of parameters for the UE to use for uplinkcommunications in an unlicensed radio frequency spectrum band, and thesecond UE operation mode may indicate a second set of parameters for theUE to use for uplink communications in the unlicensed radio frequencyspectrum band. In some examples, the UE 115 may transmit one or moreuplink messages to the base station in the unlicensed radio frequencyspectrum band using the first set of parameters. The UE 115 may thenreceive a control message including an indication that the UE 115 is toswitch from communicating according to the first configured UE operationmode to communicating according to the second configured UE operationmode. In response to receiving the control message, the UE 115 maytransmit one or more uplink messages to the base station 105 in theunlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode.

FIG. 2 illustrates an example of a wireless communications system 200that supports techniques for switching between CG modes in accordancewith aspects of the present disclosure. In some examples, the wirelesscommunications system 200 may implement aspects of the wirelesscommunications system 100. For examples, the wireless communicationssystem 200 may include a base station 205 which may be an example of thecorresponding devices described with reference to FIG. 1 , such as abase station 105. The wireless communications system 200 may alsoinclude a UE 215, which may be an example of the corresponding devicesdescribed with reference to FIG. 1 , such as a UE 115. For example, thewireless communications system 200 may support techniques for uplinktransmission from the UE 215 to the base station 205 according to a CG.

Base station 205 may serve one or more UEs 115, including UE 215, withincoverage area 250. The base station 205 may transmit messages to UE 215over downlink communication link 225-a. The UE 215 may receive message(e.g., control signaling 210) from the base station 205. The UE 215 maycommunicate with the base station 205 by transmitting messages overuplink communications link 225-b. According to one or more aspects,wireless communications system 200 may support techniques to switchbetween URLLC CG and NR-U CG.

Some wireless communications systems may provide for UE feedbackenhancements for HARQ-ACK feedback. In some examples, channel stateinformation (CSI) feedback enhancements may allow for more accuratemodulation and coding scheme (MCS) selection. Uplink enhancements forURLLC in unlicensed controlled environments may support UE-initiatedchannel occupancy time (COT) for frame based equipment (FBE).

In some aspects, the UE 215 scheduling uplink transmissions using a CGmay activate a CG mode via control signaling 210 (e.g., an RRCconfiguration) received from the base station 205. The UE 215 mayacknowledge the configuration indicated in control signaling 210 bytransmitting feedback 220 to the base station 205. In some examples, thewireless communications system 200 may support harmonizing uplink CGenhancements in NR-U and URLLC. For instance, the wirelesscommunications system 200 may support a CG mode for communicationaccording to low-latency parameters, high-reliability parameters, orboth—for example, URLLC. In other examples, the wireless communicationssystem 200 may support a CG mode for communication in an NR-U system.

In some cases, the wireless communications system 200 may supportintra-UE multiplexing and prioritization of traffic with differentpriority. For example, the wireless communications system 200 mayspecify multiplexing behavior among HARQ-ACK or scheduling request (SR)or CSI and PUSCH for traffic with different priorities, including thecases with uplink control information (UCI) on physical uplink controlchannel (PUCCH) and UCI on PUSCH. Additionally or alternatively, thewireless communications system 200 may specify physical layer (PHY)prioritization of overlapping dynamic grant PUSCH and CG PUSCH ofdifferent PHY priorities on a BWP of a serving cell, including therelated cancelation behavior for the PUSCH of lower PHY priority.

The wireless communications system 200 may further support enhancementsfor support of time synchronization. For example, the wirelesscommunications system 200 may support impacts on uplink timesynchronization for time sensitive networking (TSN). Additionally oralternatively, the wireless communications system 200 may supportpropagation delay compensation enhancements, including mobility issues,as well as enhancements based on QoS related parameters (e.g., survivaltime, burst spread).

As depicted herein, URLLC CG may be designed to satisfy the latency andreliability parameters of URLLC services. In some examples, NR-U CG maybe designed to reduce the impact of LBT failure in unlicensed band.Examples of CG features in URLLC and NR-U may be summarized in Table 1:

TABLE 1 CG features URLLC supportable NR-U supportable Multiple CG YesYes configurations HARQ Process ID Equation with first Decided anddetermination transmission occasion reported by (TO) UE in CG-UCISharing HARQ ID No Yes among multiple CG configurations Redundancyversion One of the RV sequences Decided and (RV) determination {0, 0, 0,0} {0, 3, 0, 3} reported by {0, 2, 3, 1} UE in CG-UCI can be configuredand associated with TO Flexible initial Yes. Can be enabled/ Yes TOdisabled by Configuredgrantconfig- StartingfromRV0 Repetition scheme(s)Type A/B Multiple transport block (TB) CG-Downlink feedback No Yesinformation (DFI) CG Re-transmission No Yes timer CG automatic Re- NoYes transmission scheme

As shown in Table 1, both URLLC CG and NR-U CG may support multiple CGconfigurations. That is, both URLLC CG and NR-U CG may support CGconfigurations indicating resources granted to the UE for communicationin a radio frequency spectrum band. In some examples, URLLC CG may notsupport sharing HARQ identifiers among multiple CG configurations. Onthe other hand, NR-U CG may support sharing HARQ identifiers amongmultiple CG configurations. Further, URLLC CG may support RVdetermination according to a sequence (e.g., {0,0,0,0}, {0,3,0,3}, or{0,2,3,1}) that may be configured and associated with transmissionoccasion (TO), while the RV determination of NR-U CG may be determinedand reported by the UE in CG-UCI.

In some examples, both URLLC CG and NR-U CG may support flexible initialTO. Further, URLLC CG may allow flexible initial TO be enabled anddisabled according to CG configuration parameter. In some cases, URLLCCG may support type A/B repetition schemes, while NR-U CG may supportmultiple TB transmission schemes. In some examples, URLLC CG may notsupport CG downlink feedback information (DFI), CG retransmissiontimers, or a CG automatic retransmission scheme. Additionally oralternatively, NR-U CG may support CG downlink feedback information(DFI), CG retransmission timers, and a CG automatic retransmissionscheme.

In some cases, a UE using a URLLC CG may experience lower latency andhigher reliability than a UE using an NR-U CG. Additionally oralternatively, a UE using URLLC CG in an unlicensed controlledenvironment may be based on the environment including other devicesoperating on the unlicensed band (e.g., other devices installed by afacility owner). Thus, interference from outside systems or radio accesstechnology (RAT) may be infrequent, yet still result in listen beforetalk (LBT) failures. However, a UE using an NR-U CG may experience areduced number of LBT failures in the unlicensed radio frequencyspectrum band.

In some examples, the wireless communications system 200 may supportsemi-static switching between using a URLLC CG and an NR-U CG. Forinstance, one of URLLC CG mode and NR-U CG mode may be configured basedon an interference condition. However, semi-static switching may includelarge switching latency due to RRC reconfiguration. Additionally oralternatively, because the LBT procedure may be performed at the UE 215for uplink transmission, the network (e.g., base station 105) may not beaware of a change in interference condition. In some instances, the UE215 may have better knowledge about changes in interference.

In some cases, the wireless communications system 200 may supportdynamic switching between a URLLC CG mode and an NR-U CG mode based onspecifying physical layer feedback enhancements. For example, thecontrol signaling 210 may include a configuration for both a default CGmode and a second CG mode (e.g., the URLLC CG mode and the NR-U CGmode). As shown in the example of FIG. 2 , the base station 205 maytransmit control signaling 210 configuring at least a first UE operationmode (e.g., CG mode) and a second UE operation mode. For example, thefirst UE operation mode may include an URLLC operation mode, and thesecond UE operation mode may include NR-U operation mode. In someexamples, the first UE operation mode (e.g., the URLLC CG mode) mayindicate a first set of parameters for the UE to use for uplinkcommunications in an unlicensed radio frequency spectrum band.Additionally or alternatively, the second UE operation mode (e.g., NR-UCG mode) may indicate a second set of parameters for the UE to use foruplink communications in the unlicensed radio frequency spectrum band.In some aspects, the default CG mode may be configured using the controlsignaling 210 (e.g., an RRC message). The UE 215 may then transmit oneor more uplink messages to the base station 205 in the unlicensed radiofrequency spectrum band using the first set of parameters. That is, ifthe default CG mode of the UE 215 is configured as the URLLC CG mode,then the UE 215 may use the first set of parameters associated with theURLLC CG mode to communicate with the base station 205.

In some examples, the base station 205 may send a control message to theUE 215 (e.g., a MAC control element (CE) sent separately from controlsignaling 210) to switch from the default CG mode to the second CG mode.Subsequently, the UE 215 may transmit feedback 220 (e.g., a PUCCH thatincludes HARQ-ACK information) to the base station 205 to acknowledgethe switch indicated by the MAC CE. In other examples, the UE 215 maytransmit a MAC CE to the base station 205 to request to switch CG modes.In such examples, the base station may transmit a second MAC CE to theUE 215 to acknowledge the request to switch CG modes. Subsequently, theUE 215 may transmit feedback 220 (e.g., a PUCCH that includes HARQ-ACKinformation) to the base station 205 to acknowledge the switch indicatedby the MAC CE. Upon receiving the MAC CE from the base station 205, theUE 215 may transmit one or more uplink messages via uplinkcommunications link 225-b to the base station 205 in the unlicensedradio frequency spectrum band using the set of parameters associatedwith the second CG mode.

Additionally or alternatively, the control signaling 210 may include aconfiguration for two separate CG processes. For example, the controlsignaling 210 may include a configuration for a default CG process(e.g., a process corresponding to a URLLC CG) and a second CG process(e.g., a process corresponding to an NR-U CG). In some examples, thebase station 205 may send an indication to the UE 215 (e.g., a MAC CE)to switch from the default CG process to the second CG process.Subsequently, the UE 215 may transmit feedback 220 (e.g., a PUCCH thatincludes HARQ-ACK information) to the base station 205 to acknowledgethe switch indicated by the MAC CE. In other examples, the UE 215 maytransmit a MAC CE to the base station 205 to request to switch the CGprocess. In such examples, the base station may transmit a second MAC CEto the UE 215 to acknowledge the request to switch the CG process.Subsequently, the UE 215 may transmit feedback 220 (e.g., a PUCCH thatincludes HARQ-ACK information) to the base station 205 to acknowledgethe switch indicated by the MAC CE.

FIG. 3 illustrates an example of a process flow 300 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The process flow 300 may include a base station305 and a UE 315, which may be examples of a base station 105 and a UE115 described with reference to FIGS. 1 and 2 .

In some examples, the base station 305 may dynamically determine toswitch the CG mode of the UE 315. For example, the base station 305 maytransmit an RRC configuration 320 to the UE 315. The RRC configuration320 may be an example of a control signaling (e.g., an RRCconfiguration) which configures the UE 315 with two CG modes. Forexample, the RRC configuration 320 may include a configuration for aURLLC CG mode and a NR-U CG mode. In some cases, the configuration for aURLLC CG mode and a NR-U CG mode may be determined by the network. TheURLLC CG mode may indicate a first set of parameters for the UE 315 touse for uplink communications in an unlicensed radio frequency spectrumband, and the NR-U CG mode may indicate a second set of parameters forthe UE to use for uplink communications in the unlicensed radiofrequency spectrum band. In some examples, the RRC configuration 320(e.g., RRC parameter) may indicate the CG mode to be used by the UE 315.Alternatively, the UE 315 may be configured with a default CG mode.

In some examples, the UE 315 may be configured with multiple CGconfigurations, where each CG configuration indicates resources grantedto the UE 315 for communication in the unlicensed radio frequencyspectrum band. According to one or more aspects, each CG configurationmay be configured with two modes and the base station 305 may use a MACCE to switch between the two modes. As depicted in the example of FIG. 3, the UE 315 may operate according to the CG configuration 310 based onthe received RRC configuration 320. In some examples, the CGconfiguration 310 may include an indication of a default CG mode (e.g.,a URLLC CG mode). When UE 315 receives the RRC configuration 320, the UE315 may begin operating in the default CG mode. In some examples, theRRC configuration 320 may include a parameter indicating which CG modeis the default CG mode (e.g., the parameter may indicate whether URLLCis the default CG mode or NR-U is the default CG mode). Additionally oralternatively, the default CG mode may be determined prior to the RRCconfiguration 320 or otherwise be pre-configured. The UE 315 may utilizea first CG mode (e.g., default CG mode) to transmit one or more uplinkmessages to the base station 305 in the unlicensed radio frequencyspectrum band using the first set of parameters associated with thefirst CG mode.

In some cases, it may be advantageous to switch the CG mode of the UE315. For example, the UE 315 may be operating according to the URLLC CGmode and the base station may determine an interference condition (e.g.,a quantity of LBT failures). Thus, the base station 305 may transmit aMAC CE 330 to the UE 315 to indicate that the UE 315 is to switch from afirst CG mode (e.g., default CG mode) to a second CG mode (e.g., switchfrom the URLLC CG mode to the NR-U CG mode). When the UE receives acontrol message (e.g., MAC CE 330) from the base station 305, the UE 315may transmit a feedback message. In some examples, the feedback messagemay indicate that the UE 315 is to switch from communicating accordingto the first CG mode to communicating according to the second CG mode.As depicted in the example of FIG. 3 , the UE 315 may transmit a PUCCH335 that includes HARQ-ACK information corresponding to the PDSCHcarrying the MAC CE 330 to the base station 305 to acknowledge thechange in CG mode indicated in the MAC CE 330. In some cases, the UE mayrefrain from switching from the default CG mode to the second CG modefor a quantity of slots after transmitting the PUCCH 335. That is, theUE 315 may transmit the feedback message a first time slot (e.g., slotn) and the uplink messages using the second CG mode may be transmittedduring a second time slot. The second time slot may be at least athreshold number of time slots after the first time slot. For example,if the PUCCH 335 is transmitted in a slot n, the UE 315 may refrain fromswitching from the default CG mode to the second mode until a slotn+3N_(slot) ^(subframe,μ), where N is a constant and μ is the subcarrierspacing (SCS) configuration for the PUCCH.

FIG. 4 illustrates an example of a process flow 400 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The process flow 400 may include a base station405 and a UE 415, which may be examples of a base station 105 and a UE115 described with reference to FIGS. 1 and 2 .

According to one or more aspects of the present disclosure, the UE 415may assist in dynamically determining to switch the CG mode of the UE415. For example, the base station 405 may transmit an RRC configuration420 to the UE 415. As depicted herein, the RRC configuration 420 may bean example of a control signaling (e.g., an RRC configuration) whichconfigures the UE 415 with at least two CG modes. For example, the RRCconfiguration 420 may include a configuration for a URLLC CG mode and aNR-U CG mode. In some cases, the configuration for a URLLC CG mode and aNR-U CG mode may be determined by the network. The URLLC CG mode mayindicate a first set of parameters for the UE 415 to use for uplinkcommunications in an unlicensed radio frequency spectrum band, and theNR-U CG mode may indicate a second set of parameters for the UE to usefor uplink communications in the unlicensed radio frequency spectrumband. In some examples, the RRC configuration 420 (e.g., RRC parameter)may indicate the CG mode to be used by the UE 415. Alternatively, the UE415 may be configured with a default CG mode.

In some examples, the UE 415 may be configured with multiple CGconfigurations, where each CG configuration indicates resources grantedto the UE 415 for communication in the unlicensed radio frequencyspectrum band. According to one or more aspects, each CG configurationmay be configured with two modes. As depicted in the example of FIG. 4 ,the UE 415 may use a MAC CE 430-a to request to switch between the twomodes. In some examples, the UE 415 may operate according to the CGconfiguration 410 based on the received RRC configuration 420. In someexamples, the CG configuration 410 may include an indication of adefault CG mode (e.g., a first UE operation mode or a URLLC CG mode).When UE 415 receives the RRC configuration 420, the UE 415 may beginoperating in the default CG mode. In some examples, the RRCconfiguration 420 may include a parameter indicating which CG mode isthe default CG mode (e.g., the parameter may indicate whether URLLC isthe default CG mode or NR-U is the default CG mode). Additionally oralternatively, the default CG mode may be determined prior to the RRCconfiguration 420 or otherwise be pre-configured. The UE 415 may utilizea first CG mode (e.g., default CG mode) to transmit one or more uplinkmessages to the base station 405 in the unlicensed radio frequencyspectrum band using the first set of parameters associated with thefirst CG mode.

In some cases, the UE 415 may be operating according to the URLLC CGmode and the UE 415 may determine an interference condition (e.g., aquantity of LBT failures). For example, the UE 415 may determine aninterference condition associated with uplink communications in theunlicensed radio frequency spectrum band. Upon determining that theinterference condition satisfies a threshold, the UE 415 may transmit acontrol message (e.g., MAC CE 430-a) requesting an update to a UEoperation mode from the first configured UE operation mode to the secondconfigured UE operation mode. As depicted herein, the UE 415 transmits aMAC CE 430-a to the base station 405 to indicate a request to switchfrom a first CG mode (e.g., default CG mode) to a second CG mode (e.g.,switch from the URLLC CG mode to the NR-U CG mode). When the UE 415receives a control message (e.g., MAC CE 430-b) from the base station405, the UE 415 may transmit a feedback message.

In some examples, the feedback message may indicate that the UE is toswitch from communicating according to the first configured UE operationmode to communicating according to the second configured UE operationmode. The feedback message thus indicates that the UE 415 is to switchfrom communicating according to the first CG mode to communicatingaccording to the second CG mode. As depicted in the example of FIG. 4 ,the UE 415 may transmit a PUCCH 435 that includes HARQ-ACK informationcorresponding to the PDSCH carrying the MAC CE 430-b to the base station405 to acknowledge the change in CG mode indicated in the MAC CE 430-b.In some cases, the UE 415 may refrain from switching from the default CGmode to the second CG mode for a quantity of slots after transmittingthe PUCCH 435. That is, the UE 415 may transmit the feedback message afirst time slot (e.g., slot n) and the uplink messages using the secondCG mode may be transmitted during a second time slot. The second timeslot may be at least a threshold number of time slots after the firsttime slot. For example, if the PUCCH 435 is transmitted in a slot n, theUE 415 may refrain from switching from the default CG mode to the secondmode until a slot n+3N_(slot) ^(subframe,μ) where N is a constant and μis the SCS configuration for the PUCCH.

FIG. 5 illustrates an example of a process flow 500 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The process flow 500 may include a base station505 and a UE 515, which may be an example of a base station 105 and a UE115 described with reference to FIGS. 1 and 2 .

In some examples, the base station 505 may dynamically determine toswitch the CG process of the UE 515. For example, the base station 505may transmit an RRC configuration 520 to the UE 515. The RRCconfiguration 520 may be an example of a control signaling (e.g., an RRCconfiguration) which configures the UE 515 with a first CG process 510-aand a second CG process 510-b. For example, the RRC configuration 520may include a configuration for the first CG process 510-a with a URLLCCG mode (e.g., a CG retransmission timer is not configured) and thesecond CG process 510-b with a NR-U CG mode (e.g., the CG retransmissiontimer is configured). In some cases, the configuration for a URLLC CGprocess and a NR-U CG process may be determined by the network. TheURLLC CG process may indicate a first set of parameters for the UE 515to use for uplink communications in an unlicensed radio frequencyspectrum band, and the NR-U CG mode may indicate a second set ofparameters for the UE to use for uplink communications in the unlicensedradio frequency spectrum band. In some examples, the RRC configuration520 (e.g., RRC parameter) may indicate the CG process to be used by theUE 515. Alternatively, the UE 515 may be configured with a default CGprocess.

As depicted herein, the UE 515 may be configured with multiple CGprocesses, each CG process may include one or multiple CGconfigurations. In some examples, each process operates according to acorresponding CG configuration which may indicate resources granted tothe UE 515 for communication in the unlicensed radio frequency spectrumband. In some examples, more than one CG process may not be active at atime. According to one or more aspects, the base station 505 may use aMAC CE 530 to switch between the two modes (e.g., activate one mode anddeactivate the other mode). For example, as depicted in the example ofFIG. 5 , the UE 515 may operate according to the CG processes 510 basedon the received RRC configuration 520. In some examples, the CGprocesses 510 may include an indication of a default CG process (e.g., aURLLC CG process). When UE 515 receives the RRC configuration 520, theUE 515 may activate the default CG process. In some examples, the RRCconfiguration 520 may include a parameter indicating which CG mode isthe default CG mode (e.g., the parameter may indicate whether URLLC isthe default CG process or NR-U is the default CG process). Additionallyor alternatively, the default CG process may be determined prior to theRRC configuration 520 or otherwise be pre-configured. The UE 515 mayutilize a first CG process (e.g., default CG process) to transmit one ormore uplink messages to the base station 505 in the unlicensed radiofrequency spectrum band using the first set of parameters associatedwith the first CG process.

In some cases, it may be advantageous to switch the CG process of the UE515. For example, the UE 515 may be operating according to the URLLC CGprocess and the base station may determine an interference condition(e.g., a quantity of LBT failures). Thus, the base station 505 maytransmit a MAC CE 530 to the UE 515 to indicate that the UE 515 is toswitch from a first CG process (e.g., default CG process) to a second CGprocess (e.g., deactivate the URLLC CG process and activate the NR-U CGprocess). When the UE receives a control message (e.g., MAC CE 530) fromthe base station 505, the UE 515 may transmit a feedback message. Insome examples, the feedback message may indicate that the UE 515 is toswitch from communicating according to the first CG process tocommunicating according to the second CG process. As depicted in theexample of FIG. 5 , the UE 515 may transmit a PUCCH 535 that includesHARQ-ACK information corresponding to the PDSCH carrying the MAC CE 530to the base station 505 to acknowledge the change in CG processindicated in the MAC CE 530. In some cases, the UE may refrain fromswitching from the default CG process to the second CG process for aquantity of slots after transmitting the PUCCH 535. That is, the UE 515may transmit the feedback message a first time slot (e.g., slot n) andthe uplink messages using the second CG process may be transmittedduring a second time slot. The second time slot may be at least athreshold number of time slots after the first time slot. For example,if the PUCCH 535 is transmitted in a slot n, the UE 515 may refrain fromswitching from the default CG process to the second process until a slotn+3N_(slot) ^(subframe,μ), where N is a constant and y is the SCSconfiguration for the PUCCH.

FIG. 6 illustrates an example of a process flow 600 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The process flow 600 may include a base station605 and a UE 615, which may be an example of a base station 105 and a UE115 described with reference to FIGS. 1 and 2 .

According to one or more aspects of the present disclosure, the UE 615may assist to dynamically determine to switch the CG process of the UE615. For example, the base station 605 may transmit an RRC configuration620 to the UE 615. The RRC configuration 620 may be an example of acontrol signaling (e.g., an RRC configuration) which configures the UE615 with a first CG process 610-a and a second CG process 610-b. Forexample, the RRC configuration 620 may include a configuration for thefirst CG process 610-a with a URLLC CG mode (e.g., a CG retransmissiontimer is not configured) and the second CG process 610-b with a NR-U CGmode (e.g., the CG retransmission timer is configured). In some cases,the configuration for a URLLC CG mode and a NR-U CG mode may bedetermined by the network. The URLLC CG mode may indicate a first set ofparameters for the UE 615 to use for uplink communications in anunlicensed radio frequency spectrum band, and the NR-U CG mode mayindicate a second set of parameters for the UE to use for uplinkcommunications in the unlicensed radio frequency spectrum band. In someexamples, the RRC configuration 620 (e.g., RRC parameter) may indicatethe CG process to be used by the UE 615. Alternatively, the UE 615 maybe configured with a default CG process.

In some examples, the UE 615 may be configured with multiple CGprocesses, where each process operates according to a corresponding CGconfiguration which may indicate resources granted to the UE 615 forcommunication in the unlicensed radio frequency spectrum band. In someexamples, more than one CG process may not be active at a time.According to one or more aspects, each UE may be configured with two CGprocess 610-a and 610-b, each CG process may include one or multiple CGconfigurations, and the UE 615 may use a MAC CE 630-a to request toswitch between the two modes. As depicted in the example of FIG. 6 , theUE 615 may operate according to the CG processes 610 based on thereceived RRC configuration 620. In some examples, the CG processes 610may include an indication of a default CG process (e.g., a URLLC CGprocess). In some examples, when UE 615 receives the RRC configuration620, the UE 615 may activate the default CG process. In some examples,the RRC configuration 620 may include a parameter indicating which CGprocess is the default CG process (e.g., the parameter may indicatewhether URLLC is the default CG process or NR-U is the default CGprocess). Additionally or alternatively, the default CG process may bedetermined prior to the RRC configuration 620 or otherwise bepre-configured. The UE 615 may utilize a first CG process (e.g., defaultCG process) to transmit one or more uplink messages to the base station605 in the unlicensed radio frequency spectrum band using the first setof parameters associated with the first CG process.

As depicted herein, it may be advantageous to switch the CG process ofthe UE 615. For example, the UE 615 may be operating according to theURLLC CG process and may determine an interference condition (e.g., aquantity of LBT failures). Thus, the UE 615 may transmit a MAC CE 630-ato the base station 605 to indicate a request to switch from a first CGprocess (e.g., default CG process) to a second CG process (e.g., switchfrom the URLLC CG process to the NR-U CG process). When the UE receivesa control message (e.g., MAC CE 630-b) from the base station 605, the UE615 may transmit a feedback message. In some examples, the feedbackmessage may indicate that the UE 615 is to switch from communicatingaccording to the first CG process to communicating according to thesecond CG process. As depicted in the example of FIG. 6 , the UE 615 maytransmit a PUCCH 635 that includes HARQ-ACK information corresponding tothe PDSCH carrying the MAC CE 630-b to the base station 505 toacknowledge the change in CG process indicated in the MAC CE 630-b. Insome cases, the UE may refrain from switching from the default CGprocess to the second CG process for a quantity of slots aftertransmitting the PUCCH 635. That is, the UE 615 may transmit thefeedback message a first time slot (e.g., slot n) and the uplinkmessages using the second CG process may be transmitted during a secondtime slot. The second time slot may be at least a threshold number oftime slots after the first time slot. For example, if the PUCCH 635 istransmitted in a slot n, the UE 615 may refrain from switching from thedefault CG process to the second process until a slot n+3N_(slot)^(subframe,μ), where N is a constant and y is the SCS configuration forthe PUCCH.

FIGS. 7A-7D illustrate example of control elements that supporttechniques for switching between CG modes in accordance with aspects ofthe present disclosure. FIG. 7A illustrates an example of a MAC CE 701that supports techniques for switching between CG modes in accordancewith aspects of the present disclosure. The MAC CE 701 may include aserving cell ID 705-a, a BWP ID 710-a, and a CG indication bit 715.

In some examples, the MAC CE 701 may be transmitted by a base station toindicate the CG mode to the UE. In some cases, the UE may operate in adefault CG mode at a time instance. In such cases, the CG indication bit715 (which may also be referred to as a flag, such as a CG flag, in someexamples) may indicate the CG mode for all CG configurations in a BWP ofa component carrier (CC). In some examples, if the CG indication bit 715is set to zero, then the URLLC CG mode may be indicated, and if the CGindication bit 715 is set to one, then the NR-U CG mode may beindicated. In some examples, the indication of the MAC CE 701 includesat least a bit indicating for the UE to switch a UE operation mode, abit field indicating an identity of a serving cell associated with theUE operation mode switch, and a bit field indicating an identity of aBWP associated with the UE operation mode switch.

Additionally or alternatively, the MAC CE 701 may indicate which CGprocess is activated for a BWP of a CC. For example, the CG indicationbit 715 may indicate the CG process for the BWP of the CC. For type 1CG, the CG configurations associated with the active CG process may beused by the UE. For type 2 CG, the active CG configurations associatedwith the active CG process may be used by the UE.

FIG. 7B illustrates an example of a MAC CE 702 that supports techniquesfor switching between CG modes in accordance with aspects of the presentdisclosure. The MAC CE 701 may include a serving cell ID 705-b, a BWP ID710-b, a bitmap including a set of CG indication bits 715, and a set ofreserved bits 720.

In some examples, the MAC CE 702 be transmitted by a base station to aUE to indicate the CG mode to the UE. In some cases, the UE may operatein a plurality of CG mode at a time instance. In such cases, the bitmapthat includes the set of CG indication bits 715 may indicate the CG modefor each CG configuration in a BWP of a CC. For example, each CGindication bit 715 of the bitmap may indicate the CG mode for a CGconfiguration. If the CG indication bit 715 corresponding to a CGconfiguration is set to zero, then the URLLC CG mode for that CGconfiguration may be indicated, while if the CG indication bit 715corresponding to a CG configuration is set to one, then the NR-U CG modefor that CG configuration may be indicated. As shown herein, the MAC CE702 may include at least a bitmap indicating an operation mode switchfor each configuration of CG resources, a bit field indicating anidentity of a serving cell associated with the UE operation mode switch,and a bit field indicating an identity of a BWP associated with the UEoperation mode switch.

Additionally or alternatively, the MAC CE 702 may indicate which CGprocess is activated for a BWP of a CC. For example, the bitmap thatincludes CG indication bits 715 may indicate whether the CGconfiguration for a CG process is activated. For example, if a CGconfiguration is activated and the CG configuration is associated with aCG process (e.g., URLLC CG mode), then the CG configuration may beactivated with URLLC CG mode.

FIG. 7C illustrates an example of a MAC CE 703 that supports techniquesfor switching between CG modes in accordance with aspects of the presentdisclosure. The MAC CE 703 may include a serving cell ID 705-a, a BWP ID710-a, and a CG request bit 725 (which may also be referred to as aflag, such as a request flag or CG request flag, in some examples). Asdepicted in the example of FIG. 7C, the MAC CE 703 may indicate arequest to switch which CG process is activated for a BWP of a CC. Forexample, the CG request bit 725 may indicate a request to switch the CGprocess for the BWP of the CC.

In some examples, the MAC CE 703 may be transmitted by a UE to a basestation to request to switch the CG mode of the UE. The MAC CE 703 mayinclude at least a bitmap indicating a request to switch a UE operationmode for each configuration of resources, a bit field indicating anidentity of a serving cell associated with the request, and a bit fieldindicating an identity of a BWP associated with the request. In somecases, the request to switch the CG mode for all CGs of a CC. In suchcases, the CG request bit 725 may indicate a request to switch the CGmode of the UE. For example, if the CG request bit 725 is set to zero,the UE may not request a change in CG mode, while if the CG request bit725 is set to one, the UE may request a change in CG mode.

FIG. 7D illustrates an example of a MAC CE 704 that supports techniquesfor switching between CG modes in accordance with aspects of the presentdisclosure. The MAC CE 704 may include a serving cell ID 705-d, a BWP ID710-d, a bitmap that may include a set of CG request bits 725, and a setof reserved bits 720.

In some examples, the MAC CE 704 may be transmitted by a UE to a basestation to request to switch the CG mode of the UE. As depicted herein,the MAC CE 704 may include at least a bit indicating a request to switcha UE operation mode, a bitmap indicating a request to switch a UEoperation mode for each configuration of resources, a bit fieldindicating an identity of a serving cell associated with the request,and a bit field indicating an identity of a BWP associated with therequest. In some cases, the UE may request a CG mode switch for one ormultiple CGs in a BWP of a CC. In such cases, the bitmap that includesthe set of CG request bits 725 may indicate the CG mode for each CGconfiguration in a BWP of a CC. For example, each CG request bit 725 ofthe bitmap may indicate the CG mode for a configuration. If the CGrequest bit 725 corresponding to a configuration is set to zero, the UEmay not request a change in CG mode, while if the CG request bit 725corresponding to a configuration is set to one, the UE may request achange in CG mode.

FIG. 8 shows a block diagram 800 of a device 805 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The device 805 may be an example of aspects of aUE 115 as described herein. The device 805 may include a receiver 810, atransmitter 815, and a communications manager 820. The device 805 mayalso include a processor. Each of these components may be incommunication with one another (e.g., via one or more buses).

The receiver 810 may provide a means for receiving information such aspackets, user data, control information, or any combination thereofassociated with various information channels (e.g., control channels,data channels, information channels related to techniques for switchingbetween CG modes). Information may be passed on to other components ofthe device 805. The receiver 810 may utilize a single antenna or a setof multiple antennas.

The transmitter 815 may provide a means for transmitting signalsgenerated by other components of the device 805. For example, thetransmitter 815 may transmit information such as packets, user data,control information, or any combination thereof associated with variousinformation channels (e.g., control channels, data channels, informationchannels related to techniques for switching between CG modes). In someexamples, the transmitter 815 may be co-located with a receiver 810 in atransceiver module. The transmitter 815 may utilize a single antenna ora set of multiple antennas.

The communications manager 820, the receiver 810, the transmitter 815,or various combinations thereof or various components thereof may beexamples of means for performing various aspects of techniques forswitching between CG modes as described herein. For example, thecommunications manager 820, the receiver 810, the transmitter 815, orvarious combinations or components thereof may support a method forperforming one or more of the functions described herein.

In some examples, the communications manager 820, the receiver 810, thetransmitter 815, or various combinations or components thereof may beimplemented in hardware (e.g., in communications management circuitry).The hardware may include a processor, a digital signal processor (DSP),an application-specific integrated circuit (ASIC), a field-programmablegate array (FPGA) or other programmable logic device, a discrete gate ortransistor logic, discrete hardware components, or any combinationthereof configured as or otherwise supporting a means for performing thefunctions described in the present disclosure. In some examples, aprocessor and memory coupled with the processor may be configured toperform one or more of the functions described herein (e.g., byexecuting, by the processor, instructions stored in the memory).

Additionally or alternatively, in some examples, the communicationsmanager 820, the receiver 810, the transmitter 815, or variouscombinations or components thereof may be implemented in code (e.g., ascommunications management software or firmware) executed by a processor.If implemented in code executed by a processor, the functions of thecommunications manager 820, the receiver 810, the transmitter 815, orvarious combinations or components thereof may be performed by ageneral-purpose processor, a DSP, a central processing unit (CPU), anASIC, an FPGA, or any combination of these or other programmable logicdevices (e.g., configured as or otherwise supporting a means forperforming the functions described in the present disclosure).

In some examples, the communications manager 820 may be configured toperform various operations (e.g., receiving, monitoring, transmitting)using or otherwise in cooperation with the receiver 810, the transmitter815, or both. For example, the communications manager 820 may receiveinformation from the receiver 810, send information to the transmitter815, or be integrated in combination with the receiver 810, thetransmitter 815, or both to receive information, transmit information,or perform various other operations as described herein.

The communications manager 820 may support wireless communication at aUE in accordance with examples as disclosed herein. For example, thecommunications manager 820 may be configured as or otherwise support ameans for receiving, from a base station, control signaling configuringat least a first UE operation mode and a second UE operation mode, thefirst UE operation mode indicating a first set of parameters for the UEto use for uplink communications in an unlicensed radio frequencyspectrum band, and the second UE operation mode indicating a second setof parameters for the UE to use for uplink communications in theunlicensed radio frequency spectrum band. The communications manager 820may be configured as or otherwise support a means for transmitting oneor more uplink messages to the base station in the unlicensed radiofrequency spectrum band using the first set of parameters. Thecommunications manager 820 may be configured as or otherwise support ameans for receiving a control message including an indication that theUE is to switch from communicating according to the first configured UEoperation mode to communicating according to the second configured UEoperation mode. The communications manager 820 may be configured as orotherwise support a means for transmitting, in response to the receivedindication, one or more uplink messages to the base station in theunlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode.

By including or configuring the communications manager 820 in accordancewith examples as described herein, the device 805 (e.g., a processorcontrolling or otherwise coupled to the receiver 810, the transmitter815, the communications manager 820, or a combination thereof) maysupport techniques for reduced processing, reduced power consumption,more efficient utilization of communication resources.

FIG. 9 shows a block diagram 900 of a device 905 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The device 905 may be an example of aspects of adevice 805 or a UE 115 as described herein. The device 905 may include areceiver 910, a transmitter 915, and a communications manager 920. Thedevice 905 may also include a processor. Each of these components may bein communication with one another (e.g., via one or more buses).

The receiver 910 may provide a means for receiving information such aspackets, user data, control information, or any combination thereofassociated with various information channels (e.g., control channels,data channels, information channels related to techniques for switchingbetween CG modes). Information may be passed on to other components ofthe device 905. The receiver 910 may utilize a single antenna or a setof multiple antennas.

The transmitter 915 may provide a means for transmitting signalsgenerated by other components of the device 905. For example, thetransmitter 915 may transmit information such as packets, user data,control information, or any combination thereof associated with variousinformation channels (e.g., control channels, data channels, informationchannels related to techniques for switching between CG modes). In someexamples, the transmitter 915 may be co-located with a receiver 910 in atransceiver module. The transmitter 915 may utilize a single antenna ora set of multiple antennas.

The device 905, or various components thereof, may be an example ofmeans for performing various aspects of techniques for switching betweenCG modes as described herein. For example, the communications manager920 may include a control signal component 925, an uplink messagecomponent 930, an operation mode component 935, or any combinationthereof. The communications manager 920 may be an example of aspects ofa communications manager 820 as described herein. In some examples, thecommunications manager 920, or various components thereof, may beconfigured to perform various operations (e.g., receiving, monitoring,transmitting) using or otherwise in cooperation with the receiver 910,the transmitter 915, or both. For example, the communications manager920 may receive information from the receiver 910, send information tothe transmitter 915, or be integrated in combination with the receiver910, the transmitter 915, or both to receive information, transmitinformation, or perform various other operations as described herein.

The communications manager 920 may support wireless communication at aUE in accordance with examples as disclosed herein. The control signalcomponent 925 may be configured as or otherwise support a means forreceiving, from a base station, control signaling configuring at least afirst UE operation mode and a second UE operation mode, the first UEoperation mode indicating a first set of parameters for the UE to usefor uplink communications in an unlicensed radio frequency spectrumband, and the second UE operation mode indicating a second set ofparameters for the UE to use for uplink communications in the unlicensedradio frequency spectrum band. The uplink message component 930 may beconfigured as or otherwise support a means for transmitting one or moreuplink messages to the base station in the unlicensed radio frequencyspectrum band using the first set of parameters.

The operation mode component 935 may be configured as or otherwisesupport a means for receiving a control message including an indicationthat the UE is to switch from communicating according to the firstconfigured UE operation mode to communicating according to the secondconfigured UE operation mode. The uplink message component 930 may beconfigured as or otherwise support a means for transmitting, in responseto the received indication, one or more uplink messages to the basestation in the unlicensed radio frequency spectrum band using the secondset of parameters according to the second UE operation mode.

FIG. 10 shows a block diagram 1000 of a communications manager 1020 thatsupports techniques for switching between CG modes in accordance withaspects of the present disclosure. The communications manager 1020 maybe an example of aspects of a communications manager 820, acommunications manager 920, or both, as described herein. Thecommunications manager 1020, or various components thereof, may be anexample of means for performing various aspects of techniques forswitching between CG modes as described herein. For example, thecommunications manager 1020 may include a control signal component 1025,an uplink message component 1030, an operation mode component 1035, aconfiguration component 1040, a request component 1045, a feedbackcomponent 1050, an interference condition component 1055, or anycombination thereof. Each of these components may communicate, directlyor indirectly, with one another (e.g., via one or more buses).

The communications manager 1020 may support wireless communication at aUE in accordance with examples as disclosed herein. The control signalcomponent 1025 may be configured as or otherwise support a means forreceiving, from a base station, control signaling configuring at least afirst UE operation mode and a second UE operation mode, the first UEoperation mode indicating a first set of parameters for the UE to usefor uplink communications in an unlicensed radio frequency spectrumband, and the second UE operation mode indicating a second set ofparameters for the UE to use for uplink communications in the unlicensedradio frequency spectrum band.

The uplink message component 1030 may be configured as or otherwisesupport a means for transmitting one or more uplink messages to the basestation in the unlicensed radio frequency spectrum band using the firstset of parameters. The operation mode component 1035 may be configuredas or otherwise support a means for receiving a control messageincluding an indication that the UE is to switch from communicatingaccording to the first configured UE operation mode to communicatingaccording to the second configured UE operation mode. In some examples,the uplink message component 1030 may be configured as or otherwisesupport a means for transmitting, in response to the receivedindication, one or more uplink messages to the base station in theunlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode.

In some examples, to support receiving the control signaling, theconfiguration component 1040 may be configured as or otherwise support ameans for receiving a configuration indicating resources granted to theUE for communication in the unlicensed radio frequency spectrum band,the configuration associated with at least the first UE operation modeand the second UE operation mode.

In some examples, to support receiving the control signaling, theconfiguration component 1040 may be configured as or otherwise support ameans for receiving a first configuration indicating resources grantedto the UE for communication in the unlicensed radio frequency spectrumband according to the first set of parameters, the first configurationof resources being associated with the first UE operation mode. In someexamples, to support receiving the control signaling, the configurationcomponent 1040 may be configured as or otherwise support a means forreceiving a second configuration indicating resources granted to the UEfor communication in the unlicensed radio frequency spectrum bandaccording to the second set of parameters, the second configuration ofresources being associated with the second UE operation mode.

In some examples, the request component 1045 may be configured as orotherwise support a means for transmitting a request to update to a UEoperation mode from the first configured UE operation mode to the secondconfigured UE operation mode, where receiving the control message is atleast in part in response to transmitting the request.

In some examples, the request includes at least a bit indicating arequest to switch a UE operation mode, a bit field indicating anidentity of a serving cell associated with the request, and a bit fieldindicating an identity of a BWP associated with the request. In someexamples, the request includes at least a bitmap indicating a request toswitch a UE operation mode for each configuration of resources, a bitfield indicating an identity of a serving cell associated with therequest, and a bit field indicating an identity of a BWP associated withthe request.

In some examples, the feedback component 1050 may be configured as orotherwise support a means for transmitting, to the base station, afeedback message in response to receiving the control message, thefeedback message indicating that the UE is to switch from communicatingaccording to the first configured UE operation mode to communicatingaccording to the second configured UE operation mode.

In some examples, the feedback message is transmitted during a firsttime slot and the uplink messages using the second set of parametersaccording to the second UE operation mode are transmitted during asecond time slot. In some examples, the second time slot is at least athreshold number of time slots after the first time slot.

In some examples, the interference condition component 1055 may beconfigured as or otherwise support a means for determining aninterference condition associated with uplink communications in theunlicensed radio frequency spectrum band. In some examples, theoperation mode component 1035 may be configured as or otherwise supporta means for transmitting, based on the interference condition satisfyinga threshold, a second control message requesting an update to a UEoperation mode from the first configured UE operation mode to the secondconfigured UE operation mode. In some examples, at least the first UEoperation mode and the second UE operation mode is associated with areconfiguration timer.

In some examples, the operation mode component 1035 may be configured asor otherwise support a means for receiving, from the base station, anindication of a default UE operation mode that includes one of the firstUE operation mode or the second UE operation mode. In some examples, theindication of the control message includes at least a bit indicating forthe UE to switch a UE operation mode, a bit field indicating an identityof a serving cell associated with the UE operation mode switch, and abit field indicating an identity of a BWP associated with the UEoperation mode switch.

In some examples, the indication of the control message includes atleast a bitmap indicating an operation mode switch for eachconfiguration of resources, a bit field indicating an identity of aserving cell associated with the UE operation mode switch, and a bitfield indicating an identity of a BWP associated with the UE operationmode switch. In some examples, the first UE operation mode includes anURLLC operation mode, and the second UE operation mode includes an NR-Uoperation mode.

FIG. 11 shows a diagram of a system 1100 including a device 1105 thatsupports techniques for switching between CG modes in accordance withaspects of the present disclosure. The device 1105 may be an example ofor include the components of a device 805, a device 905, or a UE 115 asdescribed herein. The device 1105 may communicate wirelessly with one ormore base stations 105, UEs 115, or any combination thereof. The device1105 may include components for bi-directional voice and datacommunications including components for transmitting and receivingcommunications, such as a communications manager 1120, an input/output(I/O) controller 1110, a transceiver 1115, an antenna 1125, a memory1130, code 1135, and a processor 1140. These components may be inelectronic communication or otherwise coupled (e.g., operatively,communicatively, functionally, electronically, electrically) via one ormore buses (e.g., a bus 1145).

The I/O controller 1110 may manage input and output signals for thedevice 1105. The I/O controller 1110 may also manage peripherals notintegrated into the device 1105. In some cases, the I/O controller 1110may represent a physical connection or port to an external peripheral.In some cases, the I/O controller 1110 may utilize an operating systemsuch as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, oranother known operating system. Additionally or alternatively, the I/Ocontroller 1110 may represent or interact with a modem, a keyboard, amouse, a touchscreen, or a similar device. In some cases, the I/Ocontroller 1110 may be implemented as part of a processor, such as theprocessor 1140. In some cases, a user may interact with the device 1105via the I/O controller 1110 or via hardware components controlled by theI/O controller 1110.

In some cases, the device 1105 may include a single antenna 1125.However, in some other cases, the device 1105 may have more than oneantenna 1125, which may be capable of concurrently transmitting orreceiving multiple wireless transmissions. The transceiver 1115 maycommunicate bi-directionally, via the one or more antennas 1125, wired,or wireless links as described herein. For example, the transceiver 1115may represent a wireless transceiver and may communicatebi-directionally with another wireless transceiver. The transceiver 1115may also include a modem to modulate the packets, to provide themodulated packets to one or more antennas 1125 for transmission, and todemodulate packets received from the one or more antennas 1125. Thetransceiver 1115, or the transceiver 1115 and one or more antennas 1125,may be an example of a transmitter 815, a transmitter 915, a receiver810, a receiver 910, or any combination thereof or component thereof, asdescribed herein.

The memory 1130 may include random access memory (RAM) and read-onlymemory (ROM). The memory 1130 may store computer-readable,computer-executable code 1135 including instructions that, when executedby the processor 1140, cause the device 1105 to perform variousfunctions described herein. The code 1135 may be stored in anon-transitory computer-readable medium such as system memory or anothertype of memory. In some cases, the code 1135 may not be directlyexecutable by the processor 1140 but may cause a computer (e.g., whencompiled and executed) to perform functions described herein. In somecases, the memory 1130 may contain, among other things, a basic I/Osystem (BIOS) which may control basic hardware or software operationsuch as the interaction with peripheral components or devices.

The processor 1140 may include an intelligent hardware device (e.g., ageneral-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, anFPGA, a programmable logic device, a discrete gate or transistor logiccomponent, a discrete hardware component, or any combination thereof).In some cases, the processor 1140 may be configured to operate a memoryarray using a memory controller. In some other cases, a memorycontroller may be integrated into the processor 1140. The processor 1140may be configured to execute computer-readable instructions stored in amemory (e.g., the memory 1130) to cause the device 1105 to performvarious functions (e.g., functions or tasks supporting techniques forswitching between CG modes). For example, the device 1105 or a componentof the device 1105 may include a processor 1140 and memory 1130 coupledto the processor 1140, the processor 1140 and memory 1130 configured toperform various functions described herein.

The communications manager 1120 may support wireless communication at aUE in accordance with examples as disclosed herein. For example, thecommunications manager 1120 may be configured as or otherwise support ameans for receiving, from a base station, control signaling configuringat least a first UE operation mode and a second UE operation mode, thefirst UE operation mode indicating a first set of parameters for the UEto use for uplink communications in an unlicensed radio frequencyspectrum band, and the second UE operation mode indicating a second setof parameters for the UE to use for uplink communications in theunlicensed radio frequency spectrum band. The communications manager1120 may be configured as or otherwise support a means for transmittingone or more uplink messages to the base station in the unlicensed radiofrequency spectrum band using the first set of parameters. Thecommunications manager 1120 may be configured as or otherwise support ameans for receiving a control message including an indication that theUE is to switch from communicating according to the first configured UEoperation mode to communicating according to the second configured UEoperation mode. The communications manager 1120 may be configured as orotherwise support a means for transmitting, in response to the receivedindication, one or more uplink messages to the base station in theunlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode.

By including or configuring the communications manager 1120 inaccordance with examples as described herein, the device 1105 maysupport techniques for improved communication reliability, reducedlatency, improved user experience related to reduced processing, reducedpower consumption, more efficient utilization of communicationresources, improved coordination between devices, longer battery life,improved utilization of processing capability.

In some examples, the communications manager 1120 may be configured toperform various operations (e.g., receiving, monitoring, transmitting)using or otherwise in cooperation with the transceiver 1115, the one ormore antennas 1125, or any combination thereof. Although thecommunications manager 1120 is illustrated as a separate component, insome examples, one or more functions described with reference to thecommunications manager 1120 may be supported by or performed by theprocessor 1140, the memory 1130, the code 1135, or any combinationthereof. For example, the code 1135 may include instructions executableby the processor 1140 to cause the device 1105 to perform variousaspects of techniques for switching between CG modes as describedherein, or the processor 1140 and the memory 1130 may be otherwiseconfigured to perform or support such operations.

FIG. 12 shows a block diagram 1200 of a device 1205 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The device 1205 may be an example of aspects ofa base station 105 as described herein. The device 1205 may include areceiver 1210, a transmitter 1215, and a communications manager 1220.The device 1205 may also include a processor. Each of these componentsmay be in communication with one another (e.g., via one or more buses).

The receiver 1210 may provide a means for receiving information such aspackets, user data, control information, or any combination thereofassociated with various information channels (e.g., control channels,data channels, information channels related to techniques for switchingbetween CG modes). Information may be passed on to other components ofthe device 1205. The receiver 1210 may utilize a single antenna or a setof multiple antennas.

The transmitter 1215 may provide a means for transmitting signalsgenerated by other components of the device 1205. For example, thetransmitter 1215 may transmit information such as packets, user data,control information, or any combination thereof associated with variousinformation channels (e.g., control channels, data channels, informationchannels related to techniques for switching between CG modes). In someexamples, the transmitter 1215 may be co-located with a receiver 1210 ina transceiver module. The transmitter 1215 may utilize a single antennaor a set of multiple antennas.

The communications manager 1220, the receiver 1210, the transmitter1215, or various combinations thereof or various components thereof maybe examples of means for performing various aspects of techniques forswitching between CG modes as described herein. For example, thecommunications manager 1220, the receiver 1210, the transmitter 1215, orvarious combinations or components thereof may support a method forperforming one or more of the functions described herein.

In some examples, the communications manager 1220, the receiver 1210,the transmitter 1215, or various combinations or components thereof maybe implemented in hardware (e.g., in communications managementcircuitry). The hardware may include a processor, a DSP, an ASIC, anFPGA or other programmable logic device, a discrete gate or transistorlogic, discrete hardware components, or any combination thereofconfigured as or otherwise supporting a means for performing thefunctions described in the present disclosure. In some examples, aprocessor and memory coupled with the processor may be configured toperform one or more of the functions described herein (e.g., byexecuting, by the processor, instructions stored in the memory).

Additionally or alternatively, in some examples, the communicationsmanager 1220, the receiver 1210, the transmitter 1215, or variouscombinations or components thereof may be implemented in code (e.g., ascommunications management software or firmware) executed by a processor.If implemented in code executed by a processor, the functions of thecommunications manager 1220, the receiver 1210, the transmitter 1215, orvarious combinations or components thereof may be performed by ageneral-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or anycombination of these or other programmable logic devices (e.g.,configured as or otherwise supporting a means for performing thefunctions described in the present disclosure).

In some examples, the communications manager 1220 may be configured toperform various operations (e.g., receiving, monitoring, transmitting)using or otherwise in cooperation with the receiver 1210, thetransmitter 1215, or both. For example, the communications manager 1220may receive information from the receiver 1210, send information to thetransmitter 1215, or be integrated in combination with the receiver1210, the transmitter 1215, or both to receive information, transmitinformation, or perform various other operations as described herein.

The communications manager 1220 may support wireless communication at abase station in accordance with examples as disclosed herein. Forexample, the communications manager 1220 may be configured as orotherwise support a means for transmitting, to a UE, control signalingconfiguring at least a first UE operation mode and a second UE operationmode, the first UE operation mode indicating a first set of parametersfor the UE to use for uplink communications in an unlicensed radiofrequency spectrum band, and the second UE operation mode indicating asecond set of parameters for the UE to use for uplink communications inthe unlicensed radio frequency spectrum band. The communications manager1220 may be configured as or otherwise support a means for receiving oneor more uplink messages from the UE in the unlicensed radio frequencyspectrum band using the first set of parameters. The communicationsmanager 1220 may be configured as or otherwise support a means fortransmitting a control message including an indication that the UE is toswitch from communicating according to the first configured UE operationmode to communicating according to the second configured UE operationmode. The communications manager 1220 may be configured as or otherwisesupport a means for receiving, in response to the transmittedindication, one or more uplink messages from the UE in the unlicensedradio frequency spectrum band using the second set of parametersaccording to the second UE operation mode.

By including or configuring the communications manager 1220 inaccordance with examples as described herein, the device 1205 (e.g., aprocessor controlling or otherwise coupled to the receiver 1210, thetransmitter 1215, the communications manager 1220, or a combinationthereof) may support techniques for reduced processing, reduced powerconsumption, more efficient utilization of communication resources.

FIG. 13 shows a block diagram 1300 of a device 1305 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The device 1305 may be an example of aspects ofa device 1205 or a base station 105 as described herein. The device 1305may include a receiver 1310, a transmitter 1315, and a communicationsmanager 1320. The device 1305 may also include a processor. Each ofthese components may be in communication with one another (e.g., via oneor more buses).

The receiver 1310 may provide a means for receiving information such aspackets, user data, control information, or any combination thereofassociated with various information channels (e.g., control channels,data channels, information channels related to techniques for switchingbetween CG modes). Information may be passed on to other components ofthe device 1305. The receiver 1310 may utilize a single antenna or a setof multiple antennas.

The transmitter 1315 may provide a means for transmitting signalsgenerated by other components of the device 1305. For example, thetransmitter 1315 may transmit information such as packets, user data,control information, or any combination thereof associated with variousinformation channels (e.g., control channels, data channels, informationchannels related to techniques for switching between CG modes). In someexamples, the transmitter 1315 may be co-located with a receiver 1310 ina transceiver module. The transmitter 1315 may utilize a single antennaor a set of multiple antennas.

The device 1305, or various components thereof, may be an example ofmeans for performing various aspects of techniques for switching betweenCG modes as described herein. For example, the communications manager1320 may include a control signal component 1325, an uplink messagecomponent 1330, an operation mode component 1335, or any combinationthereof. The communications manager 1320 may be an example of aspects ofa communications manager 1220 as described herein. In some examples, thecommunications manager 1320, or various components thereof, may beconfigured to perform various operations (e.g., receiving, monitoring,transmitting) using or otherwise in cooperation with the receiver 1310,the transmitter 1315, or both. For example, the communications manager1320 may receive information from the receiver 1310, send information tothe transmitter 1315, or be integrated in combination with the receiver1310, the transmitter 1315, or both to receive information, transmitinformation, or perform various other operations as described herein.

The communications manager 1320 may support wireless communication at abase station in accordance with examples as disclosed herein. Thecontrol signal component 1325 may be configured as or otherwise supporta means for transmitting, to a UE, control signaling configuring atleast a first UE operation mode and a second UE operation mode, thefirst UE operation mode indicating a first set of parameters for the UEto use for uplink communications in an unlicensed radio frequencyspectrum band, and the second UE operation mode indicating a second setof parameters for the UE to use for uplink communications in theunlicensed radio frequency spectrum band. The uplink message component1330 may be configured as or otherwise support a means for receiving oneor more uplink messages from the UE in the unlicensed radio frequencyspectrum band using the first set of parameters.

The operation mode component 1335 may be configured as or otherwisesupport a means for transmitting a control message including anindication that the UE is to switch from communicating according to thefirst configured UE operation mode to communicating according to thesecond configured UE operation mode. The uplink message component 1330may be configured as or otherwise support a means for receiving, inresponse to the transmitted indication, one or more uplink messages fromthe UE in the unlicensed radio frequency spectrum band using the secondset of parameters according to the second UE operation mode.

FIG. 14 shows a block diagram 1400 of a communications manager 1420 thatsupports techniques for switching between CG modes in accordance withaspects of the present disclosure. The communications manager 1420 maybe an example of aspects of a communications manager 1220, acommunications manager 1320, or both, as described herein. Thecommunications manager 1420, or various components thereof, may be anexample of means for performing various aspects of techniques forswitching between CG modes as described herein. For example, thecommunications manager 1420 may include a control signal component 1425,an uplink message component 1430, an operation mode component 1435, aconfiguration component 1440, a request component 1445, a feedbackmessage 1450, or any combination thereof. Each of these components maycommunicate, directly or indirectly, with one another (e.g., via one ormore buses).

The communications manager 1420 may support wireless communication at abase station in accordance with examples as disclosed herein. Thecontrol signal component 1425 may be configured as or otherwise supporta means for transmitting, to a UE, control signaling configuring atleast a first UE operation mode and a second UE operation mode, thefirst UE operation mode indicating a first set of parameters for the UEto use for uplink communications in an unlicensed radio frequencyspectrum band, and the second UE operation mode indicating a second setof parameters for the UE to use for uplink communications in theunlicensed radio frequency spectrum band. The uplink message component1430 may be configured as or otherwise support a means for receiving oneor more uplink messages from the UE in the unlicensed radio frequencyspectrum band using the first set of parameters.

The operation mode component 1435 may be configured as or otherwisesupport a means for transmitting a control message including anindication that the UE is to switch from communicating according to thefirst configured UE operation mode to communicating according to thesecond configured UE operation mode. In some examples, the uplinkmessage component 1430 may be configured as or otherwise support a meansfor receiving, in response to the transmitted indication, one or moreuplink messages from the UE in the unlicensed radio frequency spectrumband using the second set of parameters according to the second UEoperation mode.

In some examples, to support transmitting the control signaling, theconfiguration component 1440 may be configured as or otherwise support ameans for a configuration indicating resources granted to the UE forcommunication in the unlicensed radio frequency spectrum band, theconfiguration associated with at least the first UE operation mode andthe second UE operation mode.

In some examples, to support transmitting the control signaling, theconfiguration component 1440 may be configured as or otherwise support ameans for transmitting a first configuration indicating resourcesgranted to the UE for communication in the unlicensed radio frequencyspectrum band according to the first set of parameters, the firstconfiguration of resources being associated with the first UE operationmode. In some examples, to support transmitting the control signaling,the configuration component 1440 may be configured as or otherwisesupport a means for transmitting a second configuration indicatingresources granted to the UE for communication in the unlicensed radiofrequency spectrum band according to the second set of parameters, thesecond configuration of resources being associated with the second UEoperation mode.

In some examples, the request component 1445 may be configured as orotherwise support a means for receiving a request to update to a UEoperation mode from the first configured UE operation mode to the secondconfigured UE operation mode, where transmitting the control message isat least in part in response to receiving the request.

In some examples, the request includes at least a bit indicating arequest to switch a UE operation mode, a bitmap indicating a request toswitch a UE operation mode for each configuration of resources, a bitfield indicating an identity of a serving cell associated with therequest, and a bit field indicating an identity of a BWP associated withthe request.

In some examples, the feedback message 1450 may be configured as orotherwise support a means for receiving, from the UE, a feedback messagein response to transmitting the control message, the feedback messageindicating that the UE is to switch from communicating according to thefirst configured UE operation mode to communicating according to thesecond configured UE operation mode.

In some examples, at least the first UE operation mode and the second UEoperation mode is associated with a reconfiguration timer. In someexamples, the operation mode component 1435 may be configured as orotherwise support a means for transmitting, to the UE, an indication ofa default UE operation mode that includes one of the first UE operationmode or the second UE operation mode.

In some examples, the indication of control message includes at least abit indicating for the UE to switch a UE operation mode, a bitmapindicating an operation mode switch for each configuration of resources,a bit field indicating an identity of a serving cell associated with theUE operation mode switch, and a bit field indicating an identity of aBWP associated with the UE operation mode switch.

FIG. 15 shows a diagram of a system 1500 including a device 1505 thatsupports techniques for switching between CG modes in accordance withaspects of the present disclosure. The device 1505 may be an example ofor include the components of a device 1205, a device 1305, or a basestation 105 as described herein. The device 1505 may communicatewirelessly with one or more base stations 105, UEs 115, or anycombination thereof. The device 1505 may include components forbi-directional voice and data communications including components fortransmitting and receiving communications, such as a communicationsmanager 1520, a network communications manager 1510, a transceiver 1515,an antenna 1525, a memory 1530, code 1535, a processor 1540, and aninter-station communications manager 1545. These components may be inelectronic communication or otherwise coupled (e.g., operatively,communicatively, functionally, electronically, electrically) via one ormore buses (e.g., a bus 1550).

The network communications manager 1510 may manage communications with acore network 130 (e.g., via one or more wired backhaul links). Forexample, the network communications manager 1510 may manage the transferof data communications for client devices, such as one or more UEs 115.

In some cases, the device 1505 may include a single antenna 1525.However, in some other cases the device 1505 may have more than oneantenna 1525, which may be capable of concurrently transmitting orreceiving multiple wireless transmissions. The transceiver 1515 maycommunicate bi-directionally, via the one or more antennas 1525, wired,or wireless links as described herein. For example, the transceiver 1515may represent a wireless transceiver and may communicatebi-directionally with another wireless transceiver. The transceiver 1515may also include a modem to modulate the packets, to provide themodulated packets to one or more antennas 1525 for transmission, and todemodulate packets received from the one or more antennas 1525. Thetransceiver 1515, or the transceiver 1515 and one or more antennas 1525,may be an example of a transmitter 1215, a transmitter 1315, a receiver1210, a receiver 1310, or any combination thereof or component thereof,as described herein.

The memory 1530 may include RAM and ROM. The memory 1530 may storecomputer-readable, computer-executable code 1535 including instructionsthat, when executed by the processor 1540, cause the device 1505 toperform various functions described herein. The code 1535 may be storedin a non-transitory computer-readable medium such as system memory oranother type of memory. In some cases, the code 1535 may not be directlyexecutable by the processor 1540 but may cause a computer (e.g., whencompiled and executed) to perform functions described herein. In somecases, the memory 1530 may contain, among other things, a BIOS which maycontrol basic hardware or software operation such as the interactionwith peripheral components or devices.

The processor 1540 may include an intelligent hardware device (e.g., ageneral-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, anFPGA, a programmable logic device, a discrete gate or transistor logiccomponent, a discrete hardware component, or any combination thereof).In some cases, the processor 1540 may be configured to operate a memoryarray using a memory controller. In some other cases, a memorycontroller may be integrated into the processor 1540. The processor 1540may be configured to execute computer-readable instructions stored in amemory (e.g., the memory 1530) to cause the device 1505 to performvarious functions (e.g., functions or tasks supporting techniques forswitching between CG modes). For example, the device 1505 or a componentof the device 1505 may include a processor 1540 and memory 1530 coupledto the processor 1540, the processor 1540 and memory 1530 configured toperform various functions described herein.

The inter-station communications manager 1545 may manage communicationswith other base stations 105, and may include a controller or schedulerfor controlling communications with UEs 115 in cooperation with otherbase stations 105. For example, the inter-station communications manager1545 may coordinate scheduling for transmissions to UEs 115 for variousinterference mitigation techniques such as beamforming or jointtransmission. In some examples, the inter-station communications manager1545 may provide an X2 interface within an LTE/LTE-A wirelesscommunications network technology to provide communication between basestations 105.

The communications manager 1520 may support wireless communication at abase station in accordance with examples as disclosed herein. Forexample, the communications manager 1520 may be configured as orotherwise support a means for transmitting, to a UE, control signalingconfiguring at least a first UE operation mode and a second UE operationmode, the first UE operation mode indicating a first set of parametersfor the UE to use for uplink communications in an unlicensed radiofrequency spectrum band, and the second UE operation mode indicating asecond set of parameters for the UE to use for uplink communications inthe unlicensed radio frequency spectrum band. The communications manager1520 may be configured as or otherwise support a means for receiving oneor more uplink messages from the UE in the unlicensed radio frequencyspectrum band using the first set of parameters. The communicationsmanager 1520 may be configured as or otherwise support a means fortransmitting a control message including an indication that the UE is toswitch from communicating according to the first configured UE operationmode to communicating according to the second configured UE operationmode. The communications manager 1520 may be configured as or otherwisesupport a means for receiving, in response to the transmittedindication, one or more uplink messages from the UE in the unlicensedradio frequency spectrum band using the second set of parametersaccording to the second UE operation mode.

By including or configuring the communications manager 1520 inaccordance with examples as described herein, the device 1505 maysupport techniques for improved communication reliability, reducedlatency, improved user experience related to reduced processing, reducedpower consumption, more efficient utilization of communicationresources, improved coordination between devices and improvedutilization of processing capability.

In some examples, the communications manager 1520 may be configured toperform various operations (e.g., receiving, monitoring, transmitting)using or otherwise in cooperation with the transceiver 1515, the one ormore antennas 1525, or any combination thereof. Although thecommunications manager 1520 is illustrated as a separate component, insome examples, one or more functions described with reference to thecommunications manager 1520 may be supported by or performed by theprocessor 1540, the memory 1530, the code 1535, or any combinationthereof. For example, the code 1535 may include instructions executableby the processor 1540 to cause the device 1505 to perform variousaspects of techniques for switching between CG modes as describedherein, or the processor 1540 and the memory 1530 may be otherwiseconfigured to perform or support such operations.

FIG. 16 shows a flowchart illustrating a method 1600 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The operations of the method 1600 may beimplemented by a UE or its components as described herein. For example,the operations of the method 1600 may be performed by a UE 115 asdescribed with reference to FIGS. 1 through 11 . In some examples, a UEmay execute a set of instructions to control the functional elements ofthe UE to perform the described functions. Additionally oralternatively, the UE may perform aspects of the described functionsusing special-purpose hardware.

At 1605, the method may include receiving, from a base station, controlsignaling configuring at least a first UE operation mode and a second UEoperation mode, the first UE operation mode indicating a first set ofparameters for the UE to use for uplink communications in an unlicensedradio frequency spectrum band, and the second UE operation modeindicating a second set of parameters for the UE to use for uplinkcommunications in the unlicensed radio frequency spectrum band. Theoperations of 1605 may be performed in accordance with examples asdisclosed herein. In some examples, aspects of the operations of 1605may be performed by a control signal component 1025 as described withreference to FIG. 10 .

At 1610, the method may include transmitting one or more uplink messagesto the base station in the unlicensed radio frequency spectrum bandusing the first set of parameters. The operations of 1610 may beperformed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 1610 may be performed by anuplink message component 1030 as described with reference to FIG. 10 .

At 1615, the method may include receiving a control message including anindication that the UE is to switch from communicating according to thefirst configured UE operation mode to communicating according to thesecond configured UE operation mode. The operations of 1615 may beperformed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 1615 may be performed by anoperation mode component 1035 as described with reference to FIG. 10 .

At 1620, the method may include transmitting, in response to thereceived indication, one or more uplink messages to the base station inthe unlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode. The operations of1620 may be performed in accordance with examples as disclosed herein.In some examples, aspects of the operations of 1620 may be performed byan uplink message component 1030 as described with reference to FIG. 10.

FIG. 17 shows a flowchart illustrating a method 1700 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The operations of the method 1700 may beimplemented by a UE or its components as described herein. For example,the operations of the method 1700 may be performed by a UE 115 asdescribed with reference to FIGS. 1 through 11 . In some examples, a UEmay execute a set of instructions to control the functional elements ofthe UE to perform the described functions. Additionally oralternatively, the UE may perform aspects of the described functionsusing special-purpose hardware.

At 1705, the method may include receiving, from a base station, controlsignaling configuring at least a first UE operation mode and a second UEoperation mode, the first UE operation mode indicating a first set ofparameters for the UE to use for uplink communications in an unlicensedradio frequency spectrum band, and the second UE operation modeindicating a second set of parameters for the UE to use for uplinkcommunications in the unlicensed radio frequency spectrum band. Theoperations of 1705 may be performed in accordance with examples asdisclosed herein. In some examples, aspects of the operations of 1705may be performed by a control signal component 1025 as described withreference to FIG. 10 .

At 1710, the method may include receiving a first configurationindicating resources granted to the UE for communication in theunlicensed radio frequency spectrum band according to the first set ofparameters, the first configuration of resources being associated withthe first UE operation mode. The operations of 1710 may be performed inaccordance with examples as disclosed herein. In some examples, aspectsof the operations of 1710 may be performed by a configuration component1040 as described with reference to FIG. 10 .

At 1715, the method may include receiving a second configurationindicating resources granted to the UE for communication in theunlicensed radio frequency spectrum band according to the second set ofparameters, the second configuration of resources being associated withthe second UE operation mode. The operations of 1715 may be performed inaccordance with examples as disclosed herein. In some examples, aspectsof the operations of 1715 may be performed by a configuration component1040 as described with reference to FIG. 10 .

At 1720, the method may include transmitting one or more uplink messagesto the base station in the unlicensed radio frequency spectrum bandusing the first set of parameters. The operations of 1720 may beperformed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 1720 may be performed by anuplink message component 1030 as described with reference to FIG. 10 .

At 1725, the method may include receiving a control message including anindication that the UE is to switch from communicating according to thefirst configured UE operation mode to communicating according to thesecond configured UE operation mode. The operations of 1725 may beperformed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 1725 may be performed by anoperation mode component 1035 as described with reference to FIG. 10 .

At 1730, the method may include transmitting, in response to thereceived indication, one or more uplink messages to the base station inthe unlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode. The operations of1730 may be performed in accordance with examples as disclosed herein.In some examples, aspects of the operations of 1730 may be performed byan uplink message component 1030 as described with reference to FIG. 10.

FIG. 18 shows a flowchart illustrating a method 1800 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The operations of the method 1800 may beimplemented by a UE or its components as described herein. For example,the operations of the method 1800 may be performed by a UE 115 asdescribed with reference to FIGS. 1 through 11 . In some examples, a UEmay execute a set of instructions to control the functional elements ofthe UE to perform the described functions. Additionally oralternatively, the UE may perform aspects of the described functionsusing special-purpose hardware.

At 1805, the method may include receiving, from a base station, controlsignaling configuring at least a first UE operation mode and a second UEoperation mode, the first UE operation mode indicating a first set ofparameters for the UE to use for uplink communications in an unlicensedradio frequency spectrum band, and the second UE operation modeindicating a second set of parameters for the UE to use for uplinkcommunications in the unlicensed radio frequency spectrum band. Theoperations of 1805 may be performed in accordance with examples asdisclosed herein. In some examples, aspects of the operations of 1805may be performed by a control signal component 1025 as described withreference to FIG. 10 .

At 1810, the method may include transmitting one or more uplink messagesto the base station in the unlicensed radio frequency spectrum bandusing the first set of parameters. The operations of 1810 may beperformed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 1810 may be performed by anuplink message component 1030 as described with reference to FIG. 10 .

At 1815, the method may include determining an interference conditionassociated with uplink communications in the unlicensed radio frequencyspectrum band The operations of 1815 may be performed in accordance withexamples as disclosed herein. In some examples, aspects of theoperations of 1815 may be performed by an interference conditioncomponent 1055 as described with reference to FIG. 10 .

At 1820, the method may include transmitting, based on the interferencecondition satisfying a threshold, a second control message requesting anupdate to a UE operation mode from the first configured UE operationmode to the second configured UE operation mode. The operations of 1820may be performed in accordance with examples as disclosed herein. Insome examples, aspects of the operations of may be performed by aninterference condition component 1055 as described with reference toFIG. 10 .

At 1825, the method may include receiving a control message including anindication that the UE is to switch from communicating according to thefirst configured UE operation mode to communicating according to thesecond configured UE operation mode. The operations of 1825 may beperformed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 1825 may be performed by anoperation mode component 1035 as described with reference to FIG. 10 .

At 1830, the method may include transmitting, in response to thereceived indication, one or more uplink messages to the base station inthe unlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode. The operations of1830 may be performed in accordance with examples as disclosed herein.In some examples, aspects of the operations of 1830 may be performed byan uplink message component 1030 as described with reference to FIG. 10.

FIG. 19 shows a flowchart illustrating a method 1900 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The operations of the method 1900 may beimplemented by a UE or its components as described herein. For example,the operations of the method 1900 may be performed by a UE 115 asdescribed with reference to FIGS. 1 through 11 . In some examples, a UEmay execute a set of instructions to control the functional elements ofthe UE to perform the described functions. Additionally oralternatively, the UE may perform aspects of the described functionsusing special-purpose hardware.

At 1905, the method may include receiving, from a base station, controlsignaling configuring at least a first UE operation mode and a second UEoperation mode, the first UE operation mode indicating a first set ofparameters for the UE to use for uplink communications in an unlicensedradio frequency spectrum band, and the second UE operation modeindicating a second set of parameters for the UE to use for uplinkcommunications in the unlicensed radio frequency spectrum band. Theoperations of 1905 may be performed in accordance with examples asdisclosed herein. In some examples, aspects of the operations of 1905may be performed by a control signal component 1025 as described withreference to FIG. 10 .

At 1910, the method may include transmitting one or more uplink messagesto the base station in the unlicensed radio frequency spectrum bandusing the first set of parameters. The operations of 1910 may beperformed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 1910 may be performed by anuplink message component 1030 as described with reference to FIG. 10 .

At 1915, the method may include receiving a first configurationindicating resources granted to the UE for communication in theunlicensed radio frequency spectrum band according to the first set ofparameters, the first configuration of resources being associated withthe first UE operation mode. The operations of 1915 may be performed inaccordance with examples as disclosed herein. In some examples, aspectsof the operations of 1915 may be performed by a configuration component1040 as described with reference to FIG. 10 .

At 1920, the method may include receiving a second configurationindicating resources granted to the UE for communication in theunlicensed radio frequency spectrum band according to the second set ofparameters, the second configuration of resources being associated withthe second UE operation mode. The operations of 1920 may be performed inaccordance with examples as disclosed herein. In some examples, aspectsof the operations of 1920 may be performed by a configuration component1040 as described with reference to FIG. 10 .

At 1925, the method may include determining an interference conditionassociated with uplink communications in the unlicensed radio frequencyspectrum band. The operations of 1925 may be performed in accordancewith examples as disclosed herein. In some examples, aspects of theoperations of 1925 may be performed by an interference conditioncomponent 1055 as described with reference to FIG. 10 .

At 1930, the method may include transmitting, based on the interferencecondition satisfying a threshold, a second control message requesting anupdate to a UE operation mode from the first configured UE operationmode to the second configured UE operation mode. The operations of 1930may be performed in accordance with examples as disclosed herein. Insome examples, aspects of the operations of 1930 may be performed by aninterference condition component 1055 as described with reference toFIG. 10 .

At 1935, the method may include receiving a control message including anindication that the UE is to switch from communicating according to thefirst configured UE operation mode to communicating according to thesecond configured UE operation mode. The operations of 1935 may beperformed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 1935 may be performed by anoperation mode component 1035 as described with reference to FIG. 10 .

At 1940, the method may include transmitting, in response to thereceived indication, one or more uplink messages to the base station inthe unlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode. The operations of1940 may be performed in accordance with examples as disclosed herein.In some examples, aspects of the operations of 1940 may be performed byan uplink message component 1030 as described with reference to FIG. 10.

FIG. 20 shows a flowchart illustrating a method 2000 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The operations of the method 2000 may beimplemented by a base station or its components as described herein. Forexample, the operations of the method 2000 may be performed by a basestation 105 as described with reference to FIGS. 1 through 7 and 12through 15 . In some examples, a base station may execute a set ofinstructions to control the functional elements of the base station toperform the described functions. Additionally or alternatively, the basestation may perform aspects of the described functions usingspecial-purpose hardware.

At 2005, the method may include transmitting, to a UE, control signalingconfiguring at least a first UE operation mode and a second UE operationmode, the first UE operation mode indicating a first set of parametersfor the UE to use for uplink communications in an unlicensed radiofrequency spectrum band, and the second UE operation mode indicating asecond set of parameters for the UE to use for uplink communications inthe unlicensed radio frequency spectrum band. The operations of 2005 maybe performed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 2005 may be performed by acontrol signal component 1425 as described with reference to FIG. 14 .

At 2010, the method may include receiving one or more uplink messagesfrom the UE in the unlicensed radio frequency spectrum band using thefirst set of parameters. The operations of 2010 may be performed inaccordance with examples as disclosed herein. In some examples, aspectsof the operations of 2010 may be performed by an uplink messagecomponent 1430 as described with reference to FIG. 14 .

At 2015, the method may include transmitting a control message includingan indication that the UE is to switch from communicating according tothe first configured UE operation mode to communicating according to thesecond configured UE operation mode. The operations of 2015 may beperformed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 2015 may be performed by anoperation mode component 1435 as described with reference to FIG. 14 .

At 2020, the method may include receiving, in response to thetransmitted indication, one or more uplink messages from the UE in theunlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode. The operations of2020 may be performed in accordance with examples as disclosed herein.In some examples, aspects of the operations of 2020 may be performed byan uplink message component 1430 as described with reference to FIG. 14.

FIG. 21 shows a flowchart illustrating a method 2100 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The operations of the method 2100 may beimplemented by a base station or its components as described herein. Forexample, the operations of the method 2100 may be performed by a basestation 105 as described with reference to FIGS. 1 through 7 and 12through 15 . In some examples, a base station may execute a set ofinstructions to control the functional elements of the base station toperform the described functions. Additionally or alternatively, the basestation may perform aspects of the described functions usingspecial-purpose hardware.

At 2105, the method may include transmitting, to a UE, control signalingconfiguring at least a first UE operation mode and a second UE operationmode, the first UE operation mode indicating a first set of parametersfor the UE to use for uplink communications in an unlicensed radiofrequency spectrum band, and the second UE operation mode indicating asecond set of parameters for the UE to use for uplink communications inthe unlicensed radio frequency spectrum band. The operations of 2105 maybe performed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 2105 may be performed by acontrol signal component 1425 as described with reference to FIG. 14 .

At 2110, the method may include receiving one or more uplink messagesfrom the UE in the unlicensed radio frequency spectrum band using thefirst set of parameters. The operations of 2110 may be performed inaccordance with examples as disclosed herein. In some examples, aspectsof the operations of 2110 may be performed by an uplink messagecomponent 1430 as described with reference to FIG. 14 .

At 2115, the method may include receiving a request to update to a UEoperation mode from the first configured UE operation mode to the secondconfigured UE operation mode, where receiving the control message is atleast in part in response to transmitting the request. The operations of2115 may be performed in accordance with examples as disclosed herein.In some examples, aspects of the operations of 2115 may be performed bya request component 1445 as described with reference to FIG. 14 .

At 2120, the method may include transmitting a control message includingan indication that the UE is to switch from communicating according tothe first configured UE operation mode to communicating according to thesecond configured UE operation mode. The operations of 2120 may beperformed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 2120 may be performed by anoperation mode component 1435 as described with reference to FIG. 14 .

At 2125, the method may include receiving, in response to thetransmitted indication, one or more uplink messages from the UE in theunlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode. The operations of2125 may be performed in accordance with examples as disclosed herein.In some examples, aspects of the operations of 2125 may be performed byan uplink message component 1430 as described with reference to FIG. 14.

FIG. 22 shows a flowchart illustrating a method 2200 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The operations of the method 2200 may beimplemented by a base station or its components as described herein. Forexample, the operations of the method 2200 may be performed by a basestation 105 as described with reference to FIGS. 1 through 7 and 12through 15 . In some examples, a base station may execute a set ofinstructions to control the functional elements of the base station toperform the described functions. Additionally or alternatively, the basestation may perform aspects of the described functions usingspecial-purpose hardware.

At 2205, the method may include transmitting, to a UE, control signalingconfiguring at least a first UE operation mode and a second UE operationmode, the first UE operation mode indicating a first set of parametersfor the UE to use for uplink communications in an unlicensed radiofrequency spectrum band, and the second UE operation mode indicating asecond set of parameters for the UE to use for uplink communications inthe unlicensed radio frequency spectrum band. The operations of 2205 maybe performed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 2205 may be performed by acontrol signal component 1425 as described with reference to FIG. 14 .

At 2210, the method may include receiving one or more uplink messagesfrom the UE in the unlicensed radio frequency spectrum band using thefirst set of parameters. The operations of 2210 may be performed inaccordance with examples as disclosed herein. In some examples, aspectsof the operations of 2210 may be performed by an uplink messagecomponent 1430 as described with reference to FIG. 14 .

At 2215, the method may include transmitting a first configurationindicating resources granted to the UE for communication in theunlicensed radio frequency spectrum band according to the first set ofparameters, the first configuration of resources being associated withthe first UE operation mode. The operations of 2215 may be performed inaccordance with examples as disclosed herein. In some examples, aspectsof the operations of 2215 may be performed by a configuration component1440 as described with reference to FIG. 14 .

At 2220, the method may include transmitting a second configurationindicating resources granted to the UE for communication in theunlicensed radio frequency spectrum band according to the second set ofparameters, the second configuration of resources being associated withthe second UE operation mode. The operations of 2220 may be performed inaccordance with examples as disclosed herein. In some examples, aspectsof the operations of 2220 may be performed by a configuration component1440 as described with reference to FIG. 14 .

At 2225, the method may include transmitting a control message includingan indication that the UE is to switch from communicating according tothe first configured UE operation mode to communicating according to thesecond configured UE operation mode. The operations of 2225 may beperformed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 2225 may be performed by anoperation mode component 1435 as described with reference to FIG. 14 .

At 2230, the method may include receiving, in response to thetransmitted indication, one or more uplink messages from the UE in theunlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode. The operations of2230 may be performed in accordance with examples as disclosed herein.In some examples, aspects of the operations of 2230 may be performed byan uplink message component 1430 as described with reference to FIG. 14.

FIG. 23 shows a flowchart illustrating a method 2300 that supportstechniques for switching between CG modes in accordance with aspects ofthe present disclosure. The operations of the method 2300 may beimplemented by a base station or its components as described herein. Forexample, the operations of the method 2300 may be performed by a basestation 105 as described with reference to FIGS. 1 through 7 and 12through 15 . In some examples, a base station may execute a set ofinstructions to control the functional elements of the base station toperform the described functions. Additionally or alternatively, the basestation may perform aspects of the described functions usingspecial-purpose hardware.

At 2305, the method may include transmitting, to a UE, control signalingconfiguring at least a first UE operation mode and a second UE operationmode, the first UE operation mode indicating a first set of parametersfor the UE to use for uplink communications in an unlicensed radiofrequency spectrum band, and the second UE operation mode indicating asecond set of parameters for the UE to use for uplink communications inthe unlicensed radio frequency spectrum band. The operations of 2305 maybe performed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 2305 may be performed by acontrol signal component 1425 as described with reference to FIG. 14 .

At 2310, the method may include receiving one or more uplink messagesfrom the UE in the unlicensed radio frequency spectrum band using thefirst set of parameters. The operations of 2310 may be performed inaccordance with examples as disclosed herein. In some examples, aspectsof the operations of 2310 may be performed by an uplink messagecomponent 1430 as described with reference to FIG. 14 .

At 2315, the method may include transmitting a first configurationindicating resources granted to the UE for communication in theunlicensed radio frequency spectrum band according to the first set ofparameters, the first configuration of resources being associated withthe first UE operation mode. The operations of 2315 may be performed inaccordance with examples as disclosed herein. In some examples, aspectsof the operations of 2315 may be performed by a configuration component1440 as described with reference to FIG. 14 .

At 2320, the method may include transmitting a second configurationindicating resources granted to the UE for communication in theunlicensed radio frequency spectrum band according to the second set ofparameters, the second configuration of resources being associated withthe second UE operation mode. The operations of 2320 may be performed inaccordance with examples as disclosed herein. In some examples, aspectsof the operations of 2320 may be performed by a configuration component1440 as described with reference to FIG. 14 .

At 2325, the method may include receiving a request to update to a UEoperation mode from the first configured UE operation mode to the secondconfigured UE operation mode, where receiving the control message is atleast in part in response to transmitting the request. The operations of2325 may be performed in accordance with examples as disclosed herein.In some examples, aspects of the operations of 2325 may be performed bya request component 1445 as described with reference to FIG. 14 .

At 2330, the method may include transmitting a control message includingan indication that the UE is to switch from communicating according tothe first configured UE operation mode to communicating according to thesecond configured UE operation mode. The operations of 2330 may beperformed in accordance with examples as disclosed herein. In someexamples, aspects of the operations of 2330 may be performed by anoperation mode component 1435 as described with reference to FIG. 14 .

At 2335, the method may include receiving, in response to thetransmitted indication, one or more uplink messages from the UE in theunlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode. The operations of2335 may be performed in accordance with examples as disclosed herein.In some examples, aspects of the operations of 2335 may be performed byan uplink message component 1430 as described with reference to FIG. 14.

The following provides an overview of aspects of the present disclosure:

Aspect 1: A method for wireless communication at a UE, comprising:receiving, from a base station, control signaling configuring at least afirst UE operation mode and a second UE operation mode, the first UEoperation mode indicating a first set of parameters for the UE to usefor uplink communications in an unlicensed radio frequency spectrumband, and the second UE operation mode indicating a second set ofparameters for the UE to use for uplink communications in the unlicensedradio frequency spectrum band; transmitting one or more uplink messagesto the base station in the unlicensed radio frequency spectrum bandusing the first set of parameters; receiving a control messagecomprising an indication that the UE is to switch from communicatingaccording to the first configured UE operation mode to communicatingaccording to the second configured UE operation mode; and transmitting,in response to the received indication, one or more uplink messages tothe base station in the unlicensed radio frequency spectrum band usingthe second set of parameters according to the second UE operation mode.

Aspect 2: The method of aspect 1, wherein receiving the controlsignaling comprises: receiving a configuration indicating resourcesgranted to the UE for communication in the unlicensed radio frequencyspectrum band, the configuration associated with at least the first UEoperation mode and the second UE operation mode.

Aspect 3: The method of any of aspects 1 through 2, wherein receivingthe control signaling comprises: receiving a first configurationindicating resources granted to the UE for communication in theunlicensed radio frequency spectrum band according to the first set ofparameters, the first configuration of resources being associated withthe first UE operation mode; and receiving a second configurationindicating resources granted to the UE for communication in theunlicensed radio frequency spectrum band according to the second set ofparameters, the second configuration of resources being associated withthe second UE operation mode.

Aspect 4: The method of any of aspects 1 through 3, further comprising:transmitting a request to update to a UE operation mode from the firstconfigured UE operation mode to the second configured UE operation mode,wherein receiving the control message is at least in part in response totransmitting the request.

Aspect 5: The method of aspect 4, wherein the request comprises at leasta bit indicating a request to switch a UE operation mode, a bit fieldindicating an identity of a serving cell associated with the request,and a bit field indicating an identity of a bandwidth part associatedwith the request.

Aspect 6: The method of any of aspects 4 through 5, wherein the requestcomprises at least a bitmap indicating a request to switch a UEoperation mode for each configuration of resources, a bit fieldindicating an identity of a serving cell associated with the request,and a bit field indicating an identity of a bandwidth part associatedwith the request.

Aspect 7: The method of any of aspects 1 through 6, further comprising:transmitting, to the base station, a feedback message in response toreceiving the control message, the feedback message indicating that theUE is to switch from communicating according to the first configured UEoperation mode to communicating according to the second configured UEoperation mode.

Aspect 8: The method of aspect 7, wherein the feedback message istransmitted during a first time slot and the uplink messages using thesecond set of parameters according to the second UE operation mode aretransmitted during a second time slot, the second time slot is at leasta threshold number of time slots after the first time slot.

Aspect 9: The method of any of aspects 1 through 8, further comprising:determining an interference condition associated with uplinkcommunications in the unlicensed radio frequency spectrum band; andtransmitting, based at least in part on the interference conditionsatisfying a threshold, a second control message requesting an update toa UE operation mode from the first configured UE operation mode to thesecond configured UE operation mode.

Aspect 10: The method of any of aspects 1 through 9, wherein at leastone of the first UE operation mode and the second UE operation mode isassociated with a reconfiguration timer.

Aspect 11: The method of any of aspects 1 through 10, furthercomprising: receiving, from the base station, an indication of a defaultUE operation mode that comprises one of the first UE operation mode orthe second UE operation mode.

Aspect 12: The method of any of aspects 1 through 11, wherein theindication of the control message comprises at least a bit indicatingfor the UE to switch a UE operation mode, a bit field indicating anidentity of a serving cell associated with the UE operation mode switch,and a bit field indicating an identity of a bandwidth part associatedwith the UE operation mode switch.

Aspect 13: The method of any of aspects 1 through 12, wherein theindication of the control message comprises at least a bitmap indicatingan operation mode switch for each configuration of resources, a bitfield indicating an identity of a serving cell associated with the UEoperation mode switch, and a bit field indicating an identity of abandwidth part associated with the UE operation mode switch.

Aspect 14: The method of any of aspects 1 through 13, wherein the firstUE operation mode comprises an ultra-reliable low-latency communication(URLLC) operation mode, and the second UE operation mode comprises a newradio (NR) in unlicensed spectrum (NR-U) operation mode.

Aspect 15: A method for wireless communication at a base station,comprising: transmitting, to a UE, control signaling configuring atleast a first UE operation mode and a second UE operation mode, thefirst UE operation mode indicating a first set of parameters for the UEto use for uplink communications in an unlicensed radio frequencyspectrum band, and the second UE operation mode indicating a second setof parameters for the UE to use for uplink communications in theunlicensed radio frequency spectrum band; receiving one or more uplinkmessages from the UE in the unlicensed radio frequency spectrum bandusing the first set of parameters; transmitting a control messagecomprising an indication that the UE is to switch from communicatingaccording to the first configured UE operation mode to communicatingaccording to the second configured UE operation mode; and receiving, inresponse to the transmitted indication, one or more uplink messages fromthe UE in the unlicensed radio frequency spectrum band using the secondset of parameters according to the second UE operation mode.

Aspect 16: The method of aspect 15, wherein transmitting the controlsignaling comprises: a configuration indicating resources granted to theUE for communication in the unlicensed radio frequency spectrum band,the configuration associated with at least the first UE operation modeand the second UE operation mode.

Aspect 17: The method of any of aspects 15 through 16, whereintransmitting the control signaling comprises: transmitting a firstconfiguration indicating resources granted to the UE for communicationin the unlicensed radio frequency spectrum band according to the firstset of parameters, the first configuration of resources being associatedwith the first UE operation mode; and transmitting a secondconfiguration indicating resources granted to the UE for communicationin the unlicensed radio frequency spectrum band according to the secondset of parameters, the second configuration of resources beingassociated with the second UE operation mode.

Aspect 18: The method of any of aspects 15 through 17, furthercomprising: receiving a request to update to a UE operation mode fromthe first configured UE operation mode to the second configured UEoperation mode, wherein receiving the control message is at least inpart in response to transmitting the request.

Aspect 19: The method of aspect 18, wherein the request comprises atleast a bit indicating a request to switch a UE operation mode, a bitmapindicating a request to switch a UE operation mode for eachconfiguration of resources, a bit field indicating an identity of aserving cell associated with the request, and a bit field indicating anidentity of a bandwidth part associated with the request.

Aspect 20: The method of any of aspects 15 through 19, furthercomprising: receiving, from the UE, a feedback message in response totransmitting the control message, the feedback message indicating thatthe UE is to switch from communicating according to the first configuredUE operation mode to communicating according to the second configured UEoperation mode.

Aspect 21: The method of any of aspects 15 through 20, wherein at leastone of the first UE operation mode and the second UE operation mode isassociated with a reconfiguration timer.

Aspect 22: The method of any of aspects 15 through 21, furthercomprising: transmitting, to the UE, an indication of a default UEoperation mode that comprises one of the first UE operation mode or thesecond UE operation mode.

Aspect 23: The method of any of aspects 15 through 22, wherein theindication of control message comprises at least a bit indicating forthe UE to switch a UE operation mode, a bitmap indicating an operationmode switch for each configuration of resources, a bit field indicatingan identity of a serving cell associated with the UE operation modeswitch, and a bit field indicating an identity of a bandwidth partassociated with the UE operation mode switch.

Aspect 24: An apparatus for wireless communication at a UE, comprising aprocessor; memory coupled with the processor; and instructions stored inthe memory and executable by the processor to cause the apparatus toperform a method of any of aspects 1 through 14.

Aspect 25: An apparatus for wireless communication at a UE, comprisingat least one means for performing a method of any of aspects 1 through14.

Aspect 26: A non-transitory computer-readable medium storing code forwireless communication at a UE, the code comprising instructionsexecutable by a processor to perform a method of any of aspects 1through 14.

Aspect 27: An apparatus for wireless communication at a base station,comprising a processor; memory coupled with the processor; andinstructions stored in the memory and executable by the processor tocause the apparatus to perform a method of any of aspects 15 through 23.

Aspect 28: An apparatus for wireless communication at a base station,comprising at least one means for performing a method of any of aspects15 through 23.

Aspect 29: A non-transitory computer-readable medium storing code forwireless communication at a base station, the code comprisinginstructions executable by a processor to perform a method of any ofaspects 15 through 23.

It should be noted that the methods described herein describe possibleimplementations, and that the operations and the steps may be rearrangedor otherwise modified and that other implementations are possible.Further, aspects from two or more of the methods may be combined.

Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may bedescribed for purposes of example, and LTE, LTE-A, LTE-A Pro, or NRterminology may be used in much of the description, the techniquesdescribed herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NRnetworks. For example, the described techniques may be applicable tovarious other wireless communications systems such as Ultra MobileBroadband (UMB), Institute of Electrical and Electronics Engineers(IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, aswell as other systems and radio technologies not explicitly mentionedherein.

Information and signals described herein may be represented using any ofa variety of different technologies and techniques. For example, data,instructions, commands, information, signals, bits, symbols, and chipsthat may be referenced throughout the description may be represented byvoltages, currents, electromagnetic waves, magnetic fields or particles,optical fields or particles, or any combination thereof.

The various illustrative blocks and components described in connectionwith the disclosure herein may be implemented or performed with ageneral-purpose processor, a DSP, an ASIC, a CPU, an FPGA or otherprogrammable logic device, discrete gate or transistor logic, discretehardware components, or any combination thereof designed to perform thefunctions described herein. A general-purpose processor may be amicroprocessor, but in the alternative, the processor may be anyprocessor, controller, microcontroller, or state machine. A processormay also be implemented as a combination of computing devices (e.g., acombination of a DSP and a microprocessor, multiple microprocessors, oneor more microprocessors in conjunction with a DSP core, or any othersuch configuration).

The functions described herein may be implemented in hardware, softwareexecuted by a processor, firmware, or any combination thereof. Ifimplemented in software executed by a processor, the functions may bestored on or transmitted over as one or more instructions or code on acomputer-readable medium. Other examples and implementations are withinthe scope of the disclosure and appended claims. For example, due to thenature of software, functions described herein may be implemented usingsoftware executed by a processor, hardware, firmware, hardwiring, orcombinations of any of these. Features implementing functions may alsobe physically located at various positions, including being distributedsuch that portions of functions are implemented at different physicallocations.

Computer-readable media includes both non-transitory computer storagemedia and communication media including any medium that facilitatestransfer of a computer program from one place to another. Anon-transitory storage medium may be any available medium that may beaccessed by a general-purpose or special-purpose computer. By way ofexample, and not limitation, non-transitory computer-readable media mayinclude RAM, ROM, electrically erasable programmable ROM (EEPROM), flashmemory, compact disk (CD) ROM or other optical disk storage, magneticdisk storage or other magnetic storage devices, or any othernon-transitory medium that may be used to carry or store desired programcode means in the form of instructions or data structures and that maybe accessed by a general-purpose or special-purpose computer, or ageneral-purpose or special-purpose processor. Also, any connection isproperly termed a computer-readable medium. For example, if the softwareis transmitted from a website, server, or other remote source using acoaxial cable, fiber optic cable, twisted pair, digital subscriber line(DSL), or wireless technologies such as infrared, radio, and microwave,then the coaxial cable, fiber optic cable, twisted pair, DSL, orwireless technologies such as infrared, radio, and microwave areincluded in the definition of computer-readable medium. Disk and disc,as used herein, include CD, laser disc, optical disc, digital versatiledisc (DVD), floppy disk and Blu-ray disc where disks usually reproducedata magnetically, while discs reproduce data optically with lasers.Combinations of the above are also included within the scope ofcomputer-readable media.

As used herein, including in the claims, “or” as used in a list of items(e.g., a list of items prefaced by a phrase such as “at least one of” or“one or more of”) indicates an inclusive list such that, for example, alist of at least one of A, B, or C means A or B or C or AB or AC or BCor ABC (i.e., A and B and C). Also, as used herein, the phrase “basedon” shall not be construed as a reference to a closed set of conditions.For example, an example step that is described as “based on condition A”may be based on both a condition A and a condition B without departingfrom the scope of the present disclosure. In other words, as usedherein, the phrase “based on” shall be construed in the same manner asthe phrase “based at least in part on.”

The term “determine” or “determining” encompasses a wide variety ofactions and, therefore, “determining” can include calculating,computing, processing, deriving, investigating, looking up (such as vialooking up in a table, a database or another data structure),ascertaining and the like. Also, “determining” can include receiving(such as receiving information), accessing (such as accessing data in amemory) and the like. Also, “determining” can include resolving,selecting, choosing, establishing and other such similar actions.

In the appended figures, similar components or features may have thesame reference label. Further, various components of the same type maybe distinguished by following the reference label by a dash and a secondlabel that distinguishes among the similar components. If just the firstreference label is used in the specification, the description isapplicable to any one of the similar components having the same firstreference label irrespective of the second reference label, or othersubsequent reference label.

The description set forth herein, in connection with the appendeddrawings, describes example configurations and does not represent allthe examples that may be implemented or that are within the scope of theclaims. The term “example” used herein means “serving as an example,instance, or illustration,” and not “preferred” or “advantageous overother examples.” The detailed description includes specific details forthe purpose of providing an understanding of the described techniques.These techniques, however, may be practiced without these specificdetails. In some instances, known structures and devices are shown inblock diagram form in order to avoid obscuring the concepts of thedescribed examples.

The description herein is provided to enable a person having ordinaryskill in the art to make or use the disclosure. Various modifications tothe disclosure will be apparent to a person having ordinary skill in theart, and the generic principles defined herein may be applied to othervariations without departing from the scope of the disclosure. Thus, thedisclosure is not limited to the examples and designs described hereinbut is to be accorded the broadest scope consistent with the principlesand novel features disclosed herein.

What is claimed is:
 1. A method for wireless communication at a userequipment (UE), comprising: receiving, from a base station, controlsignaling configuring at least a first UE operation mode and a second UEoperation mode, the first UE operation mode indicating a first set ofparameters for the UE to use for uplink communications in an unlicensedradio frequency spectrum band, and the second UE operation modeindicating a second set of parameters for the UE to use for uplinkcommunications in the unlicensed radio frequency spectrum band;transmitting one or more uplink messages to the base station in theunlicensed radio frequency spectrum band using the first set ofparameters; receiving a control message comprising an indication thatthe UE is to switch from communicating according to the first configuredUE operation mode to communicating according to the second configured UEoperation mode; and transmitting, in response to the receivedindication, one or more uplink messages to the base station in theunlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode.
 2. The method ofclaim 1, wherein receiving the control signaling comprises: receiving aconfiguration indicating resources granted to the UE for communicationin the unlicensed radio frequency spectrum band, the configurationassociated with at least the first UE operation mode and the second UEoperation mode.
 3. The method of claim 1, wherein receiving the controlsignaling comprises: receiving a first configuration indicatingresources granted to the UE for communication in the unlicensed radiofrequency spectrum band according to the first set of parameters, thefirst configuration of resources being associated with the first UEoperation mode; and receiving a second configuration indicatingresources granted to the UE for communication in the unlicensed radiofrequency spectrum band according to the second set of parameters, thesecond configuration of resources being associated with the second UEoperation mode.
 4. The method of claim 1, further comprising:transmitting a request to update to a UE operation mode from the firstconfigured UE operation mode to the second configured UE operation mode,wherein receiving the control message is at least in part in response totransmitting the request.
 5. The method of claim 4, wherein the requestcomprises at least a bit indicating a request to switch a UE operationmode, a bit field indicating an identity of a serving cell associatedwith the request, and a bit field indicating an identity of a bandwidthpart associated with the request.
 6. The method of claim 4, wherein therequest comprises at least a bitmap indicating a request to switch a UEoperation mode for each configuration of resources, a bit fieldindicating an identity of a serving cell associated with the request,and a bit field indicating an identity of a bandwidth part associatedwith the request.
 7. The method of claim 1, further comprising:transmitting, to the base station, a feedback message in response toreceiving the control message, the feedback message indicating that theUE is to switch from communicating according to the first configured UEoperation mode to communicating according to the second configured UEoperation mode.
 8. The method of claim 7, wherein the feedback messageis transmitted during a first time slot and the uplink messages usingthe second set of parameters according to the second UE operation modeare transmitted during a second time slot, the second time slot is atleast a threshold number of time slots after the first time slot.
 9. Themethod of claim 1, further comprising: determining an interferencecondition associated with uplink communications in the unlicensed radiofrequency spectrum band; and transmitting, based at least in part on theinterference condition satisfying a threshold, a second control messagerequesting an update to a UE operation mode from the first configured UEoperation mode to the second configured UE operation mode.
 10. Themethod of claim 1, wherein at least one of the first UE operation modeand the second UE operation mode is associated with a reconfigurationtimer.
 11. The method of claim 1, further comprising: receiving, fromthe base station, an indication of a default UE operation mode thatcomprises one of the first UE operation mode or the second UE operationmode.
 12. The method of claim 1, wherein the indication of the controlmessage comprises at least a bit indicating for the UE to switch a UEoperation mode, a bit field indicating an identity of a serving cellassociated with the UE operation mode switch, and a bit field indicatingan identity of a bandwidth part associated with the UE operation modeswitch.
 13. The method of claim 1, wherein the indication of the controlmessage comprises at least a bitmap indicating an operation mode switchfor each configuration of resources, a bit field indicating an identityof a serving cell associated with the UE operation mode switch, and abit field indicating an identity of a bandwidth part associated with theUE operation mode switch.
 14. The method of claim 1, wherein the firstUE operation mode comprises an ultra-reliable low-latency communication(URLLC) operation mode, and the second UE operation mode comprises a newradio (NR) in unlicensed spectrum (NR-U) operation mode.
 15. A methodfor wireless communication at a base station, comprising: transmitting,to a user equipment (UE), control signaling configuring at least a firstUE operation mode and a second UE operation mode, the first UE operationmode indicating a first set of parameters for the UE to use for uplinkcommunications in an unlicensed radio frequency spectrum band, and thesecond UE operation mode indicating a second set of parameters for theUE to use for uplink communications in the unlicensed radio frequencyspectrum band; receiving one or more uplink messages from the UE in theunlicensed radio frequency spectrum band using the first set ofparameters; transmitting a control message comprising an indication thatthe UE is to switch from communicating according to the first configuredUE operation mode to communicating according to the second configured UEoperation mode; and receiving, in response to the transmittedindication, one or more uplink messages from the UE in the unlicensedradio frequency spectrum band using the second set of parametersaccording to the second UE operation mode.
 16. The method of claim 15,wherein transmitting the control signaling comprises: a configurationindicating resources granted to the UE for communication in theunlicensed radio frequency spectrum band, the configuration associatedwith at least the first UE operation mode and the second UE operationmode.
 17. The method of claim 15, wherein transmitting the controlsignaling comprises: transmitting a first configuration indicatingresources granted to the UE for communication in the unlicensed radiofrequency spectrum band according to the first set of parameters, thefirst configuration of resources being associated with the first UEoperation mode; and transmitting a second configuration indicatingresources granted to the UE for communication in the unlicensed radiofrequency spectrum band according to the second set of parameters, thesecond configuration of resources being associated with the second UEoperation mode.
 18. The method of claim 15, further comprising:receiving a request to update to a UE operation mode from the firstconfigured UE operation mode to the second configured UE operation mode,wherein transmitting the control message is at least in part in responseto receiving the request.
 19. The method of claim 18, wherein therequest comprises at least a bit indicating a request to switch a UEoperation mode, a bitmap indicating a request to switch a UE operationmode for each configuration of resources, a bit field indicating anidentity of a serving cell associated with the request, and a bit fieldindicating an identity of a bandwidth part associated with the request.20. The method of claim 15, further comprising: receiving, from the UE,a feedback message in response to transmitting the control message, thefeedback message indicating that the UE is to switch from communicatingaccording to the first configured UE operation mode to communicatingaccording to the second configured UE operation mode.
 21. The method ofclaim 15, wherein at least one of the first UE operation mode and thesecond UE operation mode is associated with a reconfiguration timer. 22.The method of claim 15, further comprising: transmitting, to the UE, anindication of a default UE operation mode that comprises one of thefirst UE operation mode or the second UE operation mode.
 23. The methodof claim 15, wherein the indication of control message comprises atleast a bit indicating for the UE to switch a UE operation mode, abitmap indicating an operation mode switch for each configuration ofresources, a bit field indicating an identity of a serving cellassociated with the UE operation mode switch, and a bit field indicatingan identity of a bandwidth part associated with the UE operation modeswitch.
 24. An apparatus for wireless communication at a user equipment(UE), comprising: a processor; memory coupled with the processor; andinstructions stored in the memory and executable by the processor tocause the apparatus to: receive, from a base station, control signalingconfiguring at least a first UE operation mode and a second UE operationmode, the first UE operation mode indicating a first set of parametersfor the UE to use for uplink communications in an unlicensed radiofrequency spectrum band, and the second UE operation mode indicating asecond set of parameters for the UE to use for uplink communications inthe unlicensed radio frequency spectrum band; transmit one or moreuplink messages to the base station in the unlicensed radio frequencyspectrum band using the first set of parameters; receive a controlmessage comprising an indication that the UE is to switch fromcommunicating according to the first configured UE operation mode tocommunicating according to the second configured UE operation mode; andtransmit, in response to the received indication, one or more uplinkmessages to the base station in the unlicensed radio frequency spectrumband using the second set of parameters according to the second UEoperation mode.
 25. The apparatus of claim 24, wherein the instructionsto receive the control signaling are executable by the processor tocause the apparatus to: receive a configuration indicating resourcesgranted to the UE for communication in the unlicensed radio frequencyspectrum band, the configuration associated with at least the first UEoperation mode and the second UE operation mode.
 26. The apparatus ofclaim 24, wherein the instructions to receive the control signaling areexecutable by the processor to cause the apparatus to: receive a firstconfiguration indicating resources granted to the UE for communicationin the unlicensed radio frequency spectrum band according to the firstset of parameters, the first configuration of resources being associatedwith the first UE operation mode; and receive a second configurationindicating resources granted to the UE for communication in theunlicensed radio frequency spectrum band according to the second set ofparameters, the second configuration of resources being associated withthe second UE operation mode.
 27. The apparatus of claim 24, wherein theinstructions are further executable by the processor to cause theapparatus to: transmit a request to update to a UE operation mode fromthe first configured UE operation mode to the second configured UEoperation mode, wherein receiving the control message is at least inpart in response to transmitting the request.
 28. The apparatus of claim27, wherein the request comprises at least a bit indicating a request toswitch a UE operation mode, a bit field indicating an identity of aserving cell associated with the request, and a bit field indicating anidentity of a bandwidth part associated with the request.
 29. Anapparatus for wireless communication at a base station, comprising: aprocessor; memory coupled with the processor; and instructions stored inthe memory and executable by the processor to cause the apparatus to:transmit, to a user equipment (UE), control signaling configuring atleast a first UE operation mode and a second UE operation mode, thefirst UE operation mode indicating a first set of parameters for the UEto use for uplink communications in an unlicensed radio frequencyspectrum band, and the second UE operation mode indicating a second setof parameters for the UE to use for uplink communications in theunlicensed radio frequency spectrum band; receive one or more uplinkmessages from the UE in the unlicensed radio frequency spectrum bandusing the first set of parameters; transmit a control message comprisingan indication that the UE is to switch from communicating according tothe first configured UE operation mode to communicating according to thesecond configured UE operation mode; and receive, in response to thetransmitted indication, one or more uplink messages from the UE in theunlicensed radio frequency spectrum band using the second set ofparameters according to the second UE operation mode.
 30. The apparatusof claim 29, wherein the instructions to transmit the control signalingare executable by the processor to cause the apparatus to: aconfiguration indicate resources granted to the UE for communication inthe unlicensed radio frequency spectrum band, the configurationassociated with at least the first UE operation mode and the second UEoperation mode. configuration of resources, a bit field indicating anidentity of a serving cell associated with the UE operation mode switch,and a bit field indicating an identity of a bandwidth part associatedwith the UE operation mode switch.